Best Engine & Oil Fluid Additives in 2022

Last update: January 18, 2023

Are engine oil additives any good?

Most engine oil additives are not worth the money. They may temporarily fix a problem, but they can also cause new problems. Many additives contain chemicals that can damage your engine. If you're having engine trouble, it's best to consult a mechanic.

Are fuel and oil additives worth it?

There are a lot of fuel and oil additives on the market, but are they worth it? Some people swear by them and say they see a big difference in their engine's performance, while others say they've never seen any difference. So, what's the verdict? It really depends on your engine and how you use it. If you have an older engine that's starting to show its age, an additive might help to prolong its life. However, if you have a newer engine that's already in good shape, an additive probably won't do much. It's

Can oil additives damage engine?

Yes, oil additives can damage your engine. The main reason is because they can cause your oil to break down and form sludge. This can clog up your oil filter and cause your engine to overheat.

Can you add oil additives after the oil change?

Most oil additives can be added after an oil change without any issues. However, it is always best to check the manufacturer’s recommendations to be sure. Some oil additives are designed to be added before an oil change, while others are meant to be added after.


AI Innovations LUC10002 Lucas Heavy Duty Oil Stabilizer, 1 Gallon Review:


I used around 12 oz. of Lucas in a Honda four-cylinder. My daughter was gone, driving the car in the summer desert while it was quite hot and heavily smoking on the way to the next town (the foolish things youngsters do!). If it would even start, I told her to take it to a technician the next week! She drove to a repair, where she was informed that the radiator hose had severely ruptured. The spark plugs were also nearly completely burned out, according to the mechanic who examined the vehicle after the hose repair, and he had never seen it in a vehicle without an engine that had been completely destroyed. She left when he changed the plugs. Ilater drove the vehicle 500 miles with no problems. I mentioned that I had some Lucas in the engine to my neighborhood five-star mechanic. This experienced older man nodded and said, "Yeah!" The engine might have avoided freezing up because of that. Although I am aware that some intelligent individuals believe chemicals are harmful, I don't share their opinion.



Lucas Oil LUC10131 1 Gallon (128 Ounces) Synthetic Oil Stabilizer Review:


After years of using the heavy oil stabilizer, I suddenly came across this, which is said to be appropriate for automobiles like Honda and imports that use lighter weight oils.I've seen a lot of discussion concerning Lucas; some people claim that it shouldn't be used in motors, but the majority of people agree that it is the greatest oil stabilizer available.I firmly believe that extends the life of your motor, prevents dry starts, and helps lubricate the cylinder walls better because, in contrast to regular motor oil, it has a long-lasting adhesion. Before I ever used high mileage oil, which you have to continue using after you start it, I would use this instead.Most of what Lucas says is accurate, yet it seems that even excellent things can have unpleasant sides. It says it will shorten the time between oil changes, however if you look at an oil filter, the thick filter actually "gunks up." It results in some problems with oil filters' filtering, which are meant to eliminate buildup. Other than that, I believe all of its claims to be accurate, and since its benefits outweigh its drawbacks, I would still advise purchasing it.



LUCAS LUC10130 Synthetic Oil Stabilizer, 1. quarts Review:


Subaru Forester 2.5XS, 2003Castrol 5w30 Synthetic OCI (Oil Change Intervals) - 5k miles was the oil used.MPG: average of 24–25Problem: Using roughly 1 qt of oil per 1,000 miles.A few months ago, I purchased a used 2003 Subaru Forester with 174k miles. At 154k miles, headgaskets were changed. I was unaware that my specific car was using oil until I had driven for around 5,000 miles. From what I could see, it wasn't spilling, but it was burning. I eventually observed that my oil lamp was occasionally flashing and had to add around 4 quarts of oil to restore it to the "F" mark. I have been closely monitoring the oil ever since. Perhaps 1 qt was being burned every thousand miles. I had to try anything, so I looked online and found Lucas Synthetic Oil. Additionally, I currently use Castrol 5w30 synthetic.I used this Lucas Oil Stabilizer during my 185k oil change service, and after driving for around 3k miles, I only needed to top it off with about 1 quart. Very impressed that it increased intake that much with just one use! I'll absolutely keep using this till the desired outcomes, but I'm starting to trust things from Lucas Oil! Definitely worth a go if you're having problems with oil consumption.



Liqui Moly 2037 Pro-Line Engine Flush - 500 Milliliters Review:


does precisely what it says it will. Cleans the engine and flushes out much of the muck and filth that accumulates over time, even for the most conscientious of us who follow maintenance schedules religiously and change fluids more frequently than the manufacturer recommends. You just need to perform it sometimes, perhaps once every 75 to 100 thousand miles. If you don't like to do routine maintenance, maybe every 50k miles. During my most recent oil change, I also used their Ceratec friction reducer, but the results are still up in the air. I feel better psychologically knowing that I went above and beyond to seize my third favorite "ladyautomobile. "'s (in case my Wife and Mother reading this).It states one bottle for every 5 liters or quarts of oil. My automobile requires 8 1/2 quarts, but my mechanic advised using just one bottle because it has a distinct "diesel" fragrance and some residue is left behind even after you drain it and the previous oil. Keep in mind that this should be added to the EXISTING DIRTY OIL while the engine is still running, idled for 10 minutes, and then drained. If you have the resources, I would advise draining the engine once, refilling with a less expensive oil, running the engine for another 10 minutes, draining again, and then performing a last fill with the high-quality synthetic oil. Remember that you only need to do this once every few years, so it's worth doing it well. The interim step should assist remove any leftover solvent or muck that may not have drained the first time.



Marvel Mystery Oil MM12R - 16 Fl Oz. (Pack of 2) Review:


I've always been curious about Marvel Mystery Oil because I've read reviews and watched a variety of YouTube videos on its advantages. So I made the decision to try it. Make sure you adhere to the label's directions for the application you're using it for! Whether you're adding to your gas or your oil, it doesn't take much.I started by adding some to my gas tank in the recommended quantity (4 oz per 10 gallons). To receive the maximum benefits of the product, most people repeat this process 2–3 times. Thus, 40 gallons of gasoline might be treated with a 16 ounce bottle of Marvel Mystery Oil. After using 40 gallons, it enhanced the performance of my 2011 KIA Sorento's 4 cylinder, and I'm about to replace the spark plugs. We've experienced problems with three of the idiot lights on my significant other's 2002 Toyota SR5 4runner, which I've heard may be caused by the O2 sensors. Those lights turned off after the third application (I repeated using a bottle, 4 oz per 10 gallons) and haven't turned back on in the past three months! The O2 sensors were cleaned, right? They have been on for a whole year, so I will say yes!Then I poured some to the four-cylinder oil in my KIA. If you use 5 quarts of oil, you could replace 1 quart of it with Marvel Mystery Oil since you can add or replace 20% of your oil. Around 3,000 miles ago, I changed my oil and used full synthetic Castrol Edge along with a pricey synthetic oil filter. It was challenging to determine the level on the dipstick because this synthetic oil was so "clean and clear." But it was only about a half-quart low. So I gave the motor 10 ounces right away. After 200 miles, the oil turned from nearly clear to black! Therefore, it was undoubtedly cleaning something. After driving it for another 300 miles, I replaced the oil and filter. I now see why it was recommended that you add this stuff about 500 miles before your regular oil change. On the highway, I'm getting three more miles per gallon and my KIA is purring like a kitten (78 on the interstate).I had finally added some (4 oz) to a 1 gallon gas container for my lawn mower and some to a 1 gallon gas/oil mixture for my ancient Toro snowblower. It has been running poorly and periodically breaking down on me. The 25-year-old Toro was back to operating like new by the time I filled the tank with petrol for the second time! I'm not kidding! Then it was automatically put to the lawn mower this spring (currently). It takes 1 tank of gas to mow the entire yard, which I just finished doing for the second time this year. It started as usual on the first pull when I went to turn it on. But the exhaust released a HUGE gray smoke cloud! It has never done that before, either. However, it's also purring like a kitten!Though I'm not a mechanic, I'm fairly handy. The outdoor air conditioner needed a new capacitor, as it wasn't cooling. And the problem was resolved.According to Marvel Mystery Oil, it increases compression, power, and MPG. It also lubricates the upper cylinder for smoother idling and keeps engines free of sludge. based on my findings or encounters. I have to agree wholeheartedly. I'll continue to periodically add a bit to the gas. But if I do that, I won't need to replace the oil for another 200 miles. I advise giving it a shot!



REV-X Stiction Fix Oil Treatment - Two 4 fl. oz. Bottles Review:


My Excursion has 6.0 ever since it was new. I've never really been a fan of additives, but a few years ago I started having problems with cold starts, so I tried Hot Shot Secret. The truck operated even better by the second day after the cold starts had been fixed.Let's jump ahead to current year. There weren't really any problems with cold starts, although there was stuttering until the oil temperature rose. Based on how it started, ran cold, and even showed slight stuttering or missing at constant highway speed, it appeared to have injector problems. I observed that it was also hazy, as though it wasn't producing enough thrust to burn the fuel.I tried HSS once more in March, but this time was different from the first. I was planning for injectors because there weren't really any changes. Last week, I decided that $75 was worth a shot at RevX because it needed an oil change and it was a long shot. I'm not kidding when I say that after finishing and running it to make sure everything was distributed, I went for a drive and failed to locate the stutter. Same thing the following day. I gave it a few more days out of caution, and I can't dispute that the stuttering was fully gone at that point. Even under rapid acceleration, where at least a slight amount of smoke would be expected, starts were smoother and there was no smoke. Power and mpg are back to where they should be, the engine is running cleaner, and the smoothness has improved.To advertise, I use a tuner that is appropriately developed, tailored to the truck's modifications, and, to put it mildly, a little more aggressive.From my personal experience, I believe RevX is superior for overall injector cleaning. HSS also functions, but I believe that depends on what the real issue is. RevX is without a doubt the first item to try, in my opinion.For the record, I did this on a whim and anticipated having to replace the injectors, so I'm happy with how nicely the vehicle is now operating. Since contributing is so out of whack, everything is better overall. How, though, can the truck function properly with such disparate injector performance? Obviously, a turbo diesel need this.



Liqui Moly (20002) Cera Tec Friction Modifier - 300 ml Review:


driving a 6.2L-powered 26-year-old HMMWV with a rebuild tag from 2009 from Ft. Lewis, Washington. I know the truck had roughly 37,000 miles on it when it was handed in to a unit in North Carolina based on official records. Odometer had broken about that time, so I replaced it.Last year, the oil was changed, and the instruments were replaced because they were worn out, unreliable, and had lenses that would not buff out.Therefore, I don't drive it very much; in the past year, I've only put around 30 hours of run time on it, totaling perhaps 350 miles.Although the 6.2L engine has been utilized for many years in various GM cars as well as many M-model military vehicles (CUCVs and HMMWVs), it is underpowered and has its drawbacks.I started looking about additives because I wanted to purchase some "insurance." What advantages do oil additives have over the gas additives I use?I placed 1.5 bottles of this stuff in the engine with the previous oil change, per the manufacturers, especially Liqui Moly, and the testimonials of many users (around 8 quarts - I have a dual oil filter system on mine). I've probably drove it 50 miles since then, and something is wrong.1. The engine is more quiet. It might be quieter, or perhaps my hearing is deteriorating more.2. The motor is operating cooler. 5 degrees or so. On days with similar temperatures, the cooling fan doesn't run as frequently and shuts off quicker.3. This one is quite fascinating. My oil pressure sender needed to be replaced, I was considering it. On most days, oil pressure at speed would be approximately 60 psi and half that at idle. The answers from the book (dash-10, Operator's manual) are: 40–50 psi at normal speeds; 15 psi at idle.Currently, I'm receiving over 50 psi at speed and around 20 psi at idle.My interpretation of this is that the oil is going more effectively with less peripheral resistance, according to my medical understanding of physiology, fluid dynamics (Poiseilles law, et al), and other factors. like the blood pressure in humans. A high diastolic pressure indicates vascular "tone," or the pressure in the vessel when the pump (your heart) is not producing output or pressure. A high systolic pressure indicates restricted flow downstream. Maybe. I'm not sure. But I'm going to stick with this theory since it's mine.4. When I start the truck after it has been idle for a few days, I no longer notice the puff of white smoke I used to. THEN I was shocked. It's been six weeks since I put this stuff in, some of them fairly cool, and I've only sometimes seen the white smoke (unburned fuel) on cooler days. Perhaps it will return when the weather is cooler or something. I keep listening for that distinctive HMMWV/diesel puff when I start the vehicle in the morning, however it may not have anything to do with the Ceratec and may simply be that the fuel additive helped an open injector close.My sister and brother-in-law, who are a year younger than me, own a comparable HMMWV with a civilian H1 diesel engine that has more than 200 000 miles on it. Really. Probably a good idea for me to ask him what, if anything, he utilizes in HIS engine.With the next oil change, I'll be using a second bottle (and a half), and I'll probably buy more.It's entirely anecdotal, so your results may vary. It could all be in my head, but I doubt it.When I get my next oil change, I'll post an update.



Liqui Moly 2009 Anti-Friction Oil Treatment - 300 ml Review:


You can find products that perform as promised on websites like bobistheoilguy.com and others, but be aware of what you are purchasing.High doses of MOS2 (molybdenum-disulfide) are present in the contents, and they are effective. However, it will lessen engine wear, lower engine temperature, enhance mileage, and eliminate valve chain clatter.When heated, this will first "dye" your oil a graphite-gray color and then somewhat thicken it. Despite its actual advantage, changing it at a dealership may result in questions about it and may not be the greatest for leased cars or cars that sludge heavily. Although the color shift is not nearly as noticeable as Ceratec, it is still feasible to wonder, "What did you put in here?"Ceratec is preferable for sluggish Euro/Diesel engines because it has the tendency to thin oil and reduce sludging. Otherwise, extremely nice material that is strongly advised.



BestLine Premium Synthetic Engine Treatment 1-Pack Review:


June 8, 2016I have 20 motorcycles for training. As you can expect, they experience a fair amount of abuse. Idling, frequent starts and stops, stalling, occasionally swift clutch releases, excessive revving, shifting with the clutch still engaged, etc.Over the past 20 years, I have experimented with a variety of chemicals in search of real-world protection. The list includes Slick 50, Duralube, Lucas oil, STP, Amsoil, Johnsen's, and more. never observed a difference. Then I discovered BestLine. After viewing various films and reading the information online, I concluded that it was again another unfounded assertion. Before this:I bought a few bottles of BestLine to test out on my banging 1982 Mercruiser 140 boat. After changing the oil and adding the recommended 10%, the knock was gone in less than 5 minutes. Completely. Much better while idle. Impressive.My interest was piqued by this. I chose to do an experiment on a training motorcycle that we no longer use for aesthetic reasons (1990 Honda CB 125T). This training motorcycle has a stock clutch and more than 10,000 parking lot miles. never repair an engine. I filled the oil mark, added about 15% of BestLine Engine Treatment, and then let it run in second gear on the center stand for about 30 minutes. I then inflated the tires and rode it for a test drive. I instantly observed that the clutch was engaging more smoothly and firmly. It operated flawlessly!I was simply morbidly curious to know how long the CB125T would run without oil. I removed the drain plug after draining the oil and kept the engine running. The bike was once more in second gear and on the middle stand. It ran for more than 26 hours with an hour meter connected. It ceased to operate because it ran out of fuel. I'm Done!I put 15% BestLine to a 2005 Honda CB250 Nighthawk training motorbike on April 10th, 2016. The oil has now been driven 758 kilometers. The hue of the oil is still gold. Despite the fact that these motorcycles perform quite well, it shifts, idles, and runs quieter.I'll use BestLine Engine Treatment not only in my own motorcycles, but also in my car, truck, and training motorcycles. You are not giving your engine the care it needs if BestLine Engine Treatment isn't in your oil. Period.As soon as I obtain video assistance, keep an eye out for a YouTube experiment. I'll PROVIDE evidence.Thanks to BestLine's personnel for providing me with all the information I needed.Cheers,Owner/Operator Motorcycle Training Institute: Harry E. Slater JR



Archoil AR9100 Oil Additive (16oz) for All Vehicles - Powerstroke Cold Starts, Eliminates Injector Problems Review:


Conclusion: I have documented a 50–55% reduction in wear through used oil lab analysis (Blackstone), and it is now required in all of my diesel (truck, boat), gasoline (daily drivers, weekend sports cars), and power steering reservoir applications. The "loss of power steering" symptom in confined parking spaces with oversized (37x13.50x20) tires is also eliminated.I changed the oil in my 2006 F-350 6.0L, which I've had since new, to synthetic 5w-40 (which Ford recommends for severe service and all temperature ranges, according to the manual). I previously used Mobil 1 and Shell Rotella T-6, however the Rotalla made my car run more smoothly. Due to faster cold weather flow and AR9100, my 6.0L started much better. Previously, it used to run a little rough below 30° and didn't feel like it had full power until it warmed up a bit after 5–10 minutes of driving. AR9100 fixed this "hesitation" (for lack of a better term); the 5w-40 alone did not fix it.I personally never go over 5,000 miles between oil changes, regardless of the weather or the type of driving (towing, highway, stop-and-go), and I always use 16 ounces of AR9100 (keep a 1 quart bottle and use half of the oil; then, add 16 ounces of AR9100 during refill instead of the last half of the quart of oil to avoid overfilling) at every oil change.Remember that the 7.3L and 6.0L motors' HEUI injectors (hydraulically actuated electronic unit injectors) were created by and licensed from Caterpillar. These injectors are driven by oil pressure, which is why stiction (caused by any amount of oil sludge) is a problem. If Archoil does not relieve stiction, you are entitled to a full refund, but you will probably require new injectors.Use **CJ-4** oil instead of the new "CK-4" formulation, which the EPA has been requesting since December 2016 and which reduces zinc, phosphorus, and viscosity. Ford has issued a TSB and "CK-4" is NOT APPROVED BY FORD FOR ANY FORD DEISEL due to increased wear. Ford has a new Ford Material Engineering Specification WSS-M2C171-F1 (Google it), and Cummins has issued CES The "CK-4" diesel specification is noteworthy because it did away with the valvetrain wear test (ASTM-IIIG) that was included in all prior diesel specifications, such as the CJ-4 diesel oil spec. And sure, critics of the Powerstroke will notice that ALL DIESELS - Cummins, Duramax, Navistar, Caterpillar, Mack, Detroit Diesel, Mercedes-Benz, etc. - will see greater wear. I suppose the other manufacturers, with the exception of Cummins, want you to buy a new truck sooner therefore they haven't resisted CK-4. This makes it even more important to utilize AR9100 because CJ-4 is now more difficult to find.The labs give you a wear benchmark across the thousands of samples for your specific motor (they also do this for gasoline engines if that is your application) so you have an index for the critical wear (iron, aluminum, copper - the reports explain where the wear is indicated based on metal type - bearings, pistons, block, cams/rocker arms, etc.), and I use Blackstone Labs (there are many labs to choose from) to perform used oil analysis to monitor the benefit of AR9100My wear metals per lab results in my 6.0L with complete synthetic 5w-40 and the Archoil AR9100 were roughly 60-65% less than the average for the engine. I currently own a 2014 F-350 6.7L that I purchased brand-new, and I'm putting the same oil and AR9100 in it. I'm noticing wear in my 6.7L that is 50–55% less than the index. I was noticing 10-15% less wear than the index before attempting AR9100 and simply using synthetic oil. I have faith. Hope this was useful.


Can you use oil additives with synthetic oil?

Yes, you can use oil additives with synthetic oil. However, you should check with the manufacturer of the synthetic oil to see if they recommend any specific oil additives. Some oil additives can actually damage synthetic oil, so it's important to use only those that are compatible.

Do engine cleaners actually work?

There is no definitive answer to this question as it depends on the specific product and the engine it is being used on. However, many engine cleaners claim to improve engine performance by removing deposits and build-up that can cause engine problems. Whether or not these products actually work as advertised is up for debate, but it is worth trying one if your engine is having trouble starting or running smoothly.

Do fuel additives really do anything?

Most fuel additives are designed to do one of three things: clean your engine, boost your octane rating, or improve your mileage. Do they actually work? It depends on the additive and what it’s designed to do. Some fuel additives, like those that contain detergents, can help keep your engine clean by preventing the build-up of deposits on fuel injectors and intake valves. These deposits can cause your engine to run less efficiently and can lead to premature wear. Other fuel additives, like octane boosters, can increase the octane

How do I stop the ticking noise in my engine?

If your engine has a ticking noise, it could be caused by a few different things. First, check your oil level and make sure it's full. If it is, then the next thing to check is your oil pressure. If your oil pressure is low, it could be causing the ticking noise. You can check your oil pressure with a gauge or by using a hand-held digital pressure tester. If your oil pressure is low, you'll need to add more oil to your engine. Another possibility is that your engine's timing belt is loose. If it is, you'll

How long does it take for fuel injector cleaner to work?

It can take up to 30 minutes for fuel injector cleaner to work. However, this depends on the severity of the problem. If the issue is minor, then the cleaner may work immediately. Otherwise, it could take a few days or even weeks for the cleaner to have any effect.

How much oil additive should I use?

Oil additives are used to improve the performance of your engine by reducing friction and wear. They can also help to clean and protect your engine from deposits and corrosion. The amount of oil additive you should use will depend on the manufacturer's recommendations and the type of engine you have.