Originally Posted by skrzypekusmc
Just got through my first oil change using AMSOIL 5w-40. It meets all the MB standards and if you order online and sign up for the preferred customer discount you can get a case of 12 for $68.40 and a WIX filter (same brand that NASCAR uses) fo $10.35. With shipping it cost me $99.98. Add tax for California. And AMSOIL DOES outperform Mobil-1 in all independent tests.
I was curious and checked into the independant testing. All I found was dealers pushing Amsoil and claimed results. I could not find an independant lab testing without allegiance. The testing results displayed did not use 0-40 Mobil. Amsoil does not make a European car oil in 0-40...apples and oranges. Plus the $2.25 premium in cost. I'll use Mobil 1 as does Mercedes Benz on original fill. A Wix nascar filter does not match to Mann/Hengst/Mahl fleece standards. However after all this I believe that either oil will insure a long engine life when properly done..
