Hey guys. Just wanted to see who has tried this out besides me. I just changed my oil a few days ago and switched over to this for the hell of it...it wasn't much more expensive than the regular castrol GTX i normally run. They say it reconditions seals, helps stop oil burnoff, etc..... I didn't really expect to notice any differences, but i was pleasantly surprised. My truck is a 94 k1500 blazer with the TBI 350, it has 140,000 miles on it. At startup, in the last year or so, there has been a very noticable burning oil smell. And under heavy loads or hard acceleration, you can smell burning oil. Wasn't terrible, but noticable. With this high mileage oil, the oil smell at startup is GONE, and i haven't smelled oil at any other time so far. My oil pressure gauge also doesn't fluctuate as much as it has been. Anyways, just wanted to see what everyone thought, and put out the word that it might be worht the extra few cents if it really does what it claims. Sorry for the long post!