http://gmtnation.com/f25/oil-life-meter-9950/
Executive summary:
Amsoil dealer claims Amsoil XL improved fuel economy in his Trailblazer by 10% over Mobil 1. When questioned if perhaps other factors were the cause, Amsoil dealer restates his claim and that outside factors remained constant.
Executive summary:
Amsoil dealer claims Amsoil XL improved fuel economy in his Trailblazer by 10% over Mobil 1. When questioned if perhaps other factors were the cause, Amsoil dealer restates his claim and that outside factors remained constant.