BestLine Racing Super Concentrate - Diamond Nano-Lubricant Engine Oil Additive Reduces Wear, Noise, Vibration - Boosts Fuel Economy & Horsepower. Made in the USA, One Bottle Treats 5-quarts of oil.

I can't rate this product enough forget liquid moli ceratec and Lucas oil stabiliser fully synthetic or not and slick 50 engine treatment all of them are not even in the same league. This stuff lubricates and coats very well so much so that my engine which normally takes about 15 minutes to get the engine up to temperature oil temp by the way, after putting this in my engine it actually took around 5 min longer to get to temperature this indicates that the lubricity had increased I highly recommend it not cheap but worth it, my car is a 2012 Merc S63 V8 twin turbo just for information purposes.

I have purchased a bunch of oil. Additives, they all seem to do the job pretty good. But this one takes it all the way does make a big difference engine runs, smoother and quieter. Fuel efficiency, I can see a little bit not too much, but I am pleased with the product. I just purchased another bottle for my Chevy truck. Now the first bottle was put into a mercedes benz, GLC300 and boy, what a difference

I bought this with the intention of increasing engine life of my bike. For the 1st time any additive seems to make a difference. This's a brand new engine (KTM 390) Turns out it did NOT increase the engine life. My engine has started to consume oil at 15K kms. I added 11% of engine oil volume (177.5ml per 1600ml). I bought this viewing project farm tests.

ممتاز بعد التجربه و اقتصاد في البنزين والصوت كويس مو مره ناعم

I have used this on three different cars. A 2001 Lexus RX 300 sold with 200k and buttery smooth engine, a 2010 Mazda 6 sold recently with 98k again engine solid and smooth, 2019 Hyundai Santa Fe with the 2.4l Thetha II engine. Bought that Hyundai with 11 miles and since day one I have been using this product now going on 118.5k the engine still going strong, no sludge, no oil burning, no compression issues and no issues to report. I have put that engine to thousands of miles from West to East coast multiple times. Still going strong and hope it hits that 200k without issues. I happily recommend this product it seems like the engine is quieter, smoother on cold starts and the engine temp doesn't seem faced no matter the Summers in the Southern U.S.