Added this to the crankcase of my '90 240DL wagon, and noticed a bit lower vibration and harshness, as well as a slight increase in fuel economy. I also did a few other repairs and upgrades around the same time, so it's hard to know for sure if the benefits can be entirely attributed to this fluid, but I do think it helps.

Paired this with their Pro-Line Engine Flush before draining old oil. Then used with a fresh LiquiMoly oil change. Got rid of most my engine ticking. 1995 Mercedes C220

Feel Smooth and accelerate faster on Cayenne Turbo 955 first time of using

Discovered this back in the seventies in Saginaw, where temps would stay below zero for ten days straight. Before adding, well-tuned Volvo engine would crank 45-60 seconds before firing. Adding this confirmed the issue was absence of any residual lubrication on cylinder walls. After adding, just 4-5 seconds and fired up happily. The subtler things others have noticed sound credible, but there's utterly no doubt about improved lubrication during 'dry' starts, where most of the wear occurs. Still adding at every change, thankfully in a milder climate.

I don't know if this really works or not, but I don't believe it can hurt to add it at each oil change. With a 37-year-old engine showing 250,000 and no evidence of any major engine work, I want to add every bit of extra protection I can for longevity.

Added this after an oil change. Preventative maintenance.

Idk how you tell of this product works. But I used this in my 05 CTT in hopes this reduces the friction in the cold months in Pa. it could possibly also be snake oil idk but we’ll see

Purchased to try it out, so far so good, does sound like it has slightly better cold starts

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Great price fast shipping