D dltowers Joined Jun 29, 2014 Messages 7 Location Texas Jul 1, 2014 #1 Anyone have any experience using Royal Purple RP 15w40 in older vehicles needing ZDDP? Also, is there a national auto parts store that sells the Royal Purple Oil Filters?
Anyone have any experience using Royal Purple RP 15w40 in older vehicles needing ZDDP? Also, is there a national auto parts store that sells the Royal Purple Oil Filters?
G GutsyGecko Joined Aug 17, 2012 Messages 427 Location Youngstown, OH Jul 1, 2014 #2 Pep Boys has the filters. I run that oil in my cat less drag car (viper engine). UOA's always look solid.
Pep Boys has the filters. I run that oil in my cat less drag car (viper engine). UOA's always look solid.
A aquariuscsm Joined Dec 30, 2006 Messages 29,558 Jul 1, 2014 #3 Does RP 15W40 still have the Synerlec additive?
G Garak Joined Dec 5, 2009 Messages 28,049 Location Regina, Saskatchewan, Canada Jul 1, 2014 #4 Good question. I know it was reformulated, too. When the non-Euro grades went to SN, the 15w-40 went to CJ-4 from CI-4+, I believe it was.
Good question. I know it was reformulated, too. When the non-Euro grades went to SN, the 15w-40 went to CJ-4 from CI-4+, I believe it was.
D dave123 Joined Jan 13, 2009 Messages 2,935 Location wi Jul 1, 2014 #5 I order RP filters and oil from Jegs free shipping on all orders.
