For 49c after rebate at CSK Murray, both are SM, which one is better?
I remember the high Moly in Chevron, but what about Shell? Some posts here mentioned that it is the better of the 2, but I haven't seen many UOA on it (at least some for Chevron).
I understand that Chevron seems to have a very close formula to Motorcraft, Trop Artics, or maybe even the Penzoil Yellow Bottle (Group II+, high moly, lower ZDDP/Calcium, no sodium). What is Shell similar to? Valvoline due to low ash additive package and still low wear metal? no sodium?
Any suggestion?
I remember the high Moly in Chevron, but what about Shell? Some posts here mentioned that it is the better of the 2, but I haven't seen many UOA on it (at least some for Chevron).
I understand that Chevron seems to have a very close formula to Motorcraft, Trop Artics, or maybe even the Penzoil Yellow Bottle (Group II+, high moly, lower ZDDP/Calcium, no sodium). What is Shell similar to? Valvoline due to low ash additive package and still low wear metal? no sodium?
Any suggestion?