Liqui Moly2009 Anti-Friction Oil Treatment -pk2

This stuff is great. I have a Transit connect van with 2.5 l engine 148,000 mi. Over the last year it started to develop what sounded like piston slap to me. Now granted, an engine can run with pistol slab for a long time but I put the liquiMoli in there, and the noise has all but disappeared, it is much quieter.

This is the magic stuff

First it works if that's what you're reading for. Make sure you bring the engine up to temperature, shut it off, add this then restart so it mixes with the hot oil that circulates through your engine. Let it run for 5-10 minutes before shutting off so it has time to blend well - for details read the rest of the reviewMy wife drives a 2019 Hyundai Accent. I have been meticulous in maintenance since the day we bought it. The engine calls for 4 quarts of oil I've always put 5 in it, a practice I don't recommend for every car but in this one it's fine. Anyway it's gotten Pennzoil Ultra platinum 5w20 in the winter and 5w30 in the summer never going more than a hundred or two miles past 3000 miles between changes. I use wix filters which I ordered by the dozen. Keep the gdi system clean, you can eat off the engine. I've put ngk ruthenium spark plugs in it, in short it's well taken care of.With the car having 120000+ miles on it now it's not quite as quiet running as when it was brand new obviously. Pricing new cars made me research additives for the engine oil & try to extend the life of this one. 99% percent of oil additives are actually counterintuitive and dilute/alter the additive package, some create corrosion , some like Lucas are nothing but heavy weight based stock with tacifiers however mos2 (moly) is truly different & will not cause detrimental effects. This product was developed originally to prevent aircraft engine pistons from seizing in the bore if the aircraft had a sudden loss in oil. It's from Germany, we all know what intellectual perfectionist they are.I put the entire 300ml/10.1oz bottle in the engine once it was up to temperature then shut off. The results upon restarting the engine were immediately noticed. The sligt valvetrain noise was gone & stayed gone, the engine ran smoother with much less vibration. Upon driving it the engine seemed to accelerate easier & faster. It sounds & feels like it did when I brought it home.I will continue to use this product for the foreseeable future & I have bought a second bottle for my 1993 Jeep 4.0 inline 6cyl

Love this stuff. Helps preserve timing chain, cam and all those other bits that benefit from molybdenum especially if you follow those crazy long oil change intervals i.e. 10,000 miles. I swear by it but still change my oil on my Lexus at 5,000. Who want a bad bottom end when it can so easily be avoided.

This product blows Hotshot and any other brand Diesel oil additive out of the water. Does your 7.3 or 6.0 power stroke have old worn out injectors or noticing your truck feels under power? Helps restore power and quiets down the top end of the engine. Totally worth the money and a fraction of the other companies.

Great stuff!

I've been using this in my 2018 audi s5 for some time and have nothing bad to say. I have a tuned and modded car and have been running lots of oil samples to see what's best and found no negatives from running this additive and noticed larger amounts of additives over a longer period of time while using it but would not recommend running oil longer because of that as I change mine less than 5k intervals at the absolute most. It will leave a odd milky appearance to your oil much like a coolant leak so don't worry. I didn't have any noise or leak issue so I didn't notice any changes but in testing via oil sample it was similar to without but did help in small amounts to cut down on my iron and aluminum wear.( very small amounts of reduction)

Great German technology… amazing product for my high mileage car… very high value for my money. Reduces noise level of my engine… highly recommended