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sprintman · 02-18-2011, 03:36 AM

Best not to use M1 0W40 with RX as it has ester content. I use Shell Helix Ultra 5W40, a Group III basestock oil with no ester or PAO content.

02-18-2011, 03:36 AM	#28
sprintman Registered User Join Date: Mar 2008 Location: Canberra, ACT, Australia Posts: 3,419 My Ride: Ex 325CI owner View My Garage	Best not to use M1 0W40 with RX as it has ester content. I use Shell Helix Ultra 5W40, a Group III basestock oil with no ester or PAO content.