I know, I placed a post in the General Automotive section already, but anyone browsing here for GC info should read this. I am VERY pleased with it. My '06 RSX Base 5-M has 12k and I decided to go w/GC on a whim....I was going Mobil 1 0w-30 but figured it's still summer and figured, why not try it? The engine is 100% happy, it's obviously smoother and quieter but revs not easier, but nicer, so I can drive it in the powerband. Overall, it's a decent trade-off. Now I can feel good about the long Honda (10k) intervals, get good protection when I rev/hammer it. The overall experience is BETTER. I am doing 3 OC a year, every 4 months starting for Dec, but will still use M1 0w-30 for winter. I have both oils here and probally in this car the GC would not run out well in the cold, but for now it's great. I will do the 2 other OCs with it, probally 10k in 4 months for me. The only question mark is mpg, but I am not thinking there will be problem. Anyway, I tried 12cSt Delo 30 in it for a few days and definately did not like it as much. Now it is like...more "solid" and silky. Although I am aware of warming-up, it is not an issue like the Delo was. I am happy and re-arranged my oil stash accordingly. PS I think people who have tried this combo mistook quieter for less power. I do not think that's the case.