AMSOIL!! the stuff works great in everything i fell in love... most people who use it do the same.

 

I use Amsoil almost exclusively in all my stuff. My Cummins gets the new DEO 5W-40 synthetic. I use ASL 5W-30 in my 2000 Chrysler 300M. ASE 10W-30/SAE 30 Small Engine Oil goes in all my 4-stroke small engines. For my air compressor I use Amsoil PCI synthetic compressor oil.

I use Red Line 75W-80 Lightweight Gear Oil for the transmission in my wife's 1966 Vespa VBC scooter, because Amsoil doesn't make a product like that. I use Volvo Penta synthetic oils in my 2002 Wellcraft engines and outdrives, mostly because I had some problems with other oils. My wife's 2006 BMW 325i gets BMW synthetic oil, which apparently is made by Castrol.

 

I use whatever the dealership puts in since oil changes come included with the price of my truck. They change oil and filter every 4000 miles for me.

 

Still useing Rotella T. Changing it every 5K with a Fleetguard strat filter. I don't see myself ever changing from this habbit.