Tag Archives: engine cleanliness

AMSOIL is Preservation Lubricant – Cars well preserved. Sold on Quality AMSOIL Dealer writes to the Corporate Office in Superior, WI: I read the article on “The Next Generation of AMSOIL Marketing” (January 2016) with great interest. I have never been a purveyor of extended drain intervals. I’ve been a Dealer since 1980 and my […]