1990 ZR-1

[PHILLY JOE]

19,000 CAN I USE MOBILE ONE. NO LEAKS RUNS GREAT. THANKS

[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]

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]

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]

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

[Kevin]

joe,
we're glad to have you aboard and hope you learn and contribute freely...however, caps lock is shouting at us and hard to read.

[PHILLY JOE]

[QUOTE=Kevin;98610]joe,
we're glad to have you aboard and hope you learn and contribute freely...however, caps lock is shouting at us and hard to read.[/QUOT ok doug. joe

[FU]

Interesting read here :

http://www.zr1specialist.com/HAT%20Web/articles/Modern%20Motor%20Oil%20and%20the%20LT5%20Engine.pd f

[PHILLY JOE]

Interesting read here :

http://www.zr1specialist.com/HAT%20Web/articles/Modern%20Motor%20Oil%20and%20the%20LT5%20Engine.pd f
thanks alot for the info i made copies of that test sheet. very interesting. joe

[pantera1683]

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.

[FU]

thanks alot for the info i made copies of that test sheet. very interesting. joe

Here is a link to hi (Marc Haibeck's) site. There is ton's of info there.

http://www.zr1specialist.com/

Rhipster has alot of great info stored on this (LT5 Registry) site also.

[lakemeadzmonster]

AMSOIL Product's are top of the line and I have been using them since the early 70's. I have put them to the extreme test's in both hot and cold climates and yes it is a once a year oil change for most drivers.:flag2: