Postby joe_d_boss » April 14th, 2013, 7:56 am
Apparently, the best rated oil on the market is Amsoil Signature Series. I use the 10W-30 with no problems. It's about $300.00 per gallon and is supposed to last for 15,000 miles (about 24,000 km) for severe service interval change. I would say change it at 10,000 miles (about 16,000 km) though. I use a Royal Purple Extended Life filter with this as well.