Pontiac GTO Forum banner

1 - 11 of 11 Posts

·
Registered
Joined
·
46 Posts
Discussion Starter #1
I just ordered a couple of bottles of ZDDP. As alot of you know, all motor oils nowadays have very little zinc and phosphorus protection for our older engines. I've been using it, but i was wondering if any of you have used "Muscle car Motor oil" or any other of the special motor oils that are available via on-line or catalog for our older engines? does anyone have any preferences or pros and cons on this topic.
 

·
Registered
Joined
·
16 Posts
I use Spectro Motor-Guard SAE 30 fo mine. It has enough zinc phosphorus (2X) without adding ZDDP. Works great and engine loves it.
 

·
Registered
Joined
·
148 Posts
My engine builder recommended Rotella 30 weight. But in the last couple of years I believe they have changed there formulas to reduce Zinc. There bottles have changed too. Where do you buy the Spectro oil? Thanks
 

·
Registered
Joined
·
148 Posts
Since the Shell Rotella was in question (IMO) I just ordered a case of the Spectro oil. Got a 5% discount too. Thanks for the info.
 
1 - 11 of 11 Posts
Top