At the risk of revisiting an old topic... My last oil change I had done at a reputable local indy shop. Tired of the high prices at HD. (Doing my own from now on by the way) Anyway, they used Amsoil synth in the crankcase and I am pretty happy with it. I see on J&P that Amsoil has a new product (new to them at least) Amsoil 75W-140 Servere Gear Lube - Synthetic Extreme Preasure Lubricant. Any horror stories? I'm thinking Amsoil is a good product and this seems to fit right in to the theme.