Originally posted by Kremithefrog: I don't think there's a blind spot. I think there is a price/availability difference though that makes many of us use Mobil1.
Amsoil is about $4/quart, is rated for and, as mentioned, holds up under extended drain -- 15K mi in my CSVT.
Just do the math re: cost per-quart vs cost per-mile, and then factor-in the amply-documented ability of Amsoil synlubes (engine oil and ATF in our case) to extend the working-life of the powertrain by 3X its factory-rated expectancy as compared to operation with conventional lubes ... Do that and you'll see a switchover to Amsoil is a no/low risk no-brainer for any properly-maintained vehicle with as much as 100,000 miles on the clock.
