The Automotive General Topics forum is NOT for any maintenance related discussions. We have a separate forum for that, yet people continually post about maintenance issues here.
If you have a maintenance question about your car or truck, please post it in the appropriate forum. Thanks.
2010 Audi A4 2.0T Quattro: RLI 5w40 HD Low Ash
2008 Cadillac STS 3.6 DI: Mobil 1 5w30