- Nov 22, 2009
- Los Angeles, Ca
Hello all. I would like to inquire if any of the following statements made on a VW forum have any merit while using Diesel oil's in flat tappet air-cooled engines. Statement 1- "You should no longer run any Diesel oils in a gasoline engine. The Government changed the oil regulations a few years ago. The additive packages including the ant-foaming agents and detergents are not right for a gas engine. Many people are now reporting 15-20 degree hotter oil temps with these Diesel oils." Statement 2- " I've resisted using the diesel oils because I've read that the diesel oil's aggressive detergent package is potentially hazardous to a gasoline engine's ring seal." My application's include mild builds with mild cams and HD single springs, and include oil filter and additional capacity via a sump. I have "successfully" used both Delo and Rotella 15w-40 oils for over a decade with no noticeable concerns. My location is the SoCal coastal areas. For what it is worth none of the above individuals have posted any documentation to support their statements. Thanks, Bill.