I will stand behind AMSOIL as well as I'm a fervent user of it. I believe in it more than any other oil out there and labatory tests have backed it's claims. There 0w30 oil is my choice and has shown a increase in engine performance and gas mileage no doubt over the standard 5w30 Synthetics..
Mobil 1 would be my second choice though but if you can obtain Amsoil it's well worth the extra few bucks a quart! Oil change Intervals for me are twice a year but I average about 15,000 miles a year so about 7500 change intervals though I know the oil can go longer, I change it 2wice a year anyway. Did I mention my driving habits are probably at the top of the list of all CEG drivers on this Forum, well at least when the SVT is running, I think some of you know what I'm talking about
