"you may need a ZDDP additive"
Basically, The EPA has screwed up everything...
Only two brands that I would even trust today are Valvoline, and Royal Purple... Nothing else... Just because it may say "Synthetic"...means absolutely nothing today....like it did years ago. Oil is completely different today than it was even two years ago..
You need an oil with ZDDP.. Valvoline Racing oil and Royal Purple have it.
No others do..
As far as I am concerned, All the others suck.. Stay away from them.
What you can do is buy ZDDP additives, and add them everytime you change the oil, and just use regular engine oil.. Royal Purple, and Don Garlits of Drag racing fame sell ZDDP additves, and I highly recommend them if you are using off the shelf engine oil... This is what the EPA has done to the basic car owner.
Without ZDDP, You will wear out your CAM and other engine parts bigtime....especially if you have a performance engine. Your typical car owner and guy behind the counter at the autoparts store are totally oblivious to this...and probably will not know what you are talking about and think you're from MARS if you bring up the subject..
I used to be a die-hard Pennzoil and Castrol user... Not anymore since all of this BS happened with the EPA intervening into Store Brand engine oil..
Melbourne, FL (Formerly from Long Island, NY!)
1965 Mustang Convertible 200cid I6, 3spd Manual
1966 Mustang Sprint 200 Registry Owner/Moderator
1966 Mustang Sprint 200 Convertible 200cid I6, C4 Auto
2007 Mustang V6 Convertible w/ Pony Package