Odd that Bowtie would reply with that answer.
I bought an extened warranty on my 95 Silverado and it required me to use Slick 50. I just bought a 99 Silverado and got a 100,000 mile extened warranty on it as well. Guess what they are requiring me to add to the crankcase? Slick 50.
Now I'm not a metalergist, or a trade mechanic, but if the warranty companies are actucually shipping this stuff to customers and requiring the installation, well that says something I think.
Mind you I have never ever used an engine additive to prolong the life of an engine before this. I did pour a quart of kerosene in an old pontiac 326 to free up sticky liffters though! Hey dont laugh, it worked extreamly well, as long as you drain and change the oil and filter after 20 min. of idling.
At any rate if your going to add something, I'd look closly at this stuff. By the way this was a Factory recomendation from Chevy.
Ed Crabb
[email protected]