Originally Posted By: madmax_ooohhh
Yes,
Quaker State Defy (Formally known as High Mileage with additional Zinc thrown in) is great oil. A little low on TBN, but a quality oil nonetheless.
Another great(conventional)High Milage oil is Mobil High Mileage.
Both are about the same price (At WalMart last time I looked) that has a little higher TBN.
Either will do you well for your application, so just purchase
whatever of the two are on sale, and make sure NOT to overextend your drain interval.
(I retired from the company with the flying donkey
, and I just chuckle at the battle between brands.)
Generally, just stick with the major name brand oils
and change them out at the manufacturer suggested oil weights
and change interval.
There is a few more difference though, the Mobil Super HM is SN and resource conserving, where the QS Defy is SL and non resource conserving with the amount of zinc in it. The Mobil Super HM is a blend. It seems almost every HM out there is now a blend (QS, Maxlife, Castrol) except Pennzoil so curious to see when that will be changing.
A "flying donkey" or a Pegasus? With being retired from Mobil you'll be a great asset to this forum, as long as your not biased lol!