1990 ZR-1

[Polo-1]

That's the factory fill, but Mobil has drpped the ZDP in the oil. Most like Royal Purple or AMS Oil with the higher ZDDP.

[xlr8nflorida]

The majority use Mobil 1.

Use Mobil 1 High Mileage for higher zinc content.

[PHILLY JOE]

Originally Posted by Polo-1

That's the factory fill, but Mobil has drpped the ZDP in the oil. Most like Royal Purple or AMS Oil with the higher ZDDP.

THANKS FOR THE INFO. JOE

[pantera1683]

Originally Posted by Polo-1

That's the factory fill, but Mobil has drpped the ZDP in the oil. Most like Royal Purple or AMS Oil with the higher ZDDP.

That's not exactly true, you can get M1 with higher ZDDP, try 0w40 euro formula.

[PHILLY JOE]

Originally Posted by pantera1683

That's not exactly true, you can get M1 with higher ZDDP, try 0w40 euro formula.

GREAT INFO . JOE

[pantera1683]

Originally Posted by PHILLY JOE

GREAT INFO . JOE

With the M1 0w40, you have to make sure its the euro formula, I usually get it when it's on sale for $4.99 at Autozone or Advance Auto Parts. It's usually almost $7.00. I just stock up on the stuff when it's on sale.