First off... Im not a dealer. I buy it from my local NAPA. Second off many dragster's use Amsiol, as well as Trophy Trucks in the Baja 1000, A few WRC Rally Cars, Dakar, And I know there are a few Nascar teams that are supplied w/ Amsoil. And why is it that for all the years running that Amsoil has NEVER payed out to someone who's engine was destroyed due to motor oil? I am just an average Joe that races his car on the weekends at SOLO II events, and drive's Buggy's at the Dunes over Thanksgiving, and Christmas. I use what I know what works. If Mobil is soooooo great, why donesnt anyone have any test's posted online that their oil beats Amsoil? Seems like that would be a good marketing tool wouldn't it? Oh yeah I believe Amsiol does sponsor AMA Motorcross events. I know I always see their truck in the pits, and their posters on the hay bails around each corner. Hmmmmmmmm.