In my 20's I spent 8 years lovingly restoring a very rare 1973 Triumph GT6, sinking a ton of cash into it. At Pepboys one day, I spied Restore Engine Oil additive and thought "Why not?" I mean, the product had a guarantee and everything. My car's engine had always been flawless the entire 8 years, it was everything else I had re-done, even at one point removing and storing the entire interior of the car in order to remove all the interior paint (and exterior) for prepping it to take to my paint guy who repainted the whole car in 18 coats of hand rubbed laquer in a deep metalflake sapphire blue. Gorgeous is how it all turned out. Since it really was the ONLY call like it in Texas, the car was quite a stand out. And then Restore ruined it.
Within 25 miles of adding this crap, on the freeway, I heard a "whine". The car always had an oil change, using the Castrol 1040 the car wanted, every 2500-3000 miles. There was not one thing wrong with that engine. When I called the company prior to adding it, to ask if there was nothing wrong now, would it cause a problem, they said "absolutely not, our product will only fill in wear areas where it is needed." I will never ever forget that horrid brittle dry Whine. I had just gotten the car started and hit the entrance ramp on the freeway when it began. I only enough time to exchange looks with my friend as we both said in unison "uh ohhhhh" and then *BAM* blew all (ALL) the rods and was stranded on the freeway. The egregious Restore folks made me submit oil samples repeatedly and even agreed that the engine siezed due to lack of oil, but although I was forced to spend money I did not have on more and more mechanics testaments and impartial folks to do further oil sample analysis, with everyone arriving at the same conclusion it was this horrid crap in my engine that caused the problem, that this crap jammed up my oil filter so badly, no oil could get to the engine, Restore did n-o-t-h-i-n-g. I was out of a car with no money to get another car, walking in Dallas, a young girl in my 20's, so not cool, while I continued to be jerked around for several years, by this abborhent company and they continued doing absolutely nothing.
In my 40's now, I have spent my years seeking out their product in stores and I always turn the cans upside down and backwards and announce to everybody within ear shot to STAY AWAY from this horrid product. i also alert the management of the store, which I am typically ignored but I do it anyway. I am actually shocked they are still in business. After decades of dishonesty and greed most companies fail. Hmmmm. To say I will never use this product again is putting it mildly. Had the company been honest and upheld their guarantee right on the can, I would have left them alone. But I am a lifetime enemy now....and I never ever stop. They may have stopped my beloved engine but my heart will attack until it stops beating.
No one should try this product, there is NOT a guarantee on this product the company will leave you car less and do absolutely nothing for you. They are the epitome of what is wrong with corporate america.