View Full Version : oil type

06-20-2007, 07:41 AM
Hi, I just had my 62 Lark rebuilt professionally.(289 V8) I am ready to change the oil after the 500 mile break in. I have read in "Old Cars Weekly" that modern oil will destroy older engines or older engines that have been rebuilt. Do any of you all have an oil recommendation for me? Type, brand, and weight? I would have to destroy my new engine. Thanks.

David G. Nittler

06-20-2007, 08:16 AM

there has been quite a discussion on the forum in recent months,
but others will agree that you should be using a diesel rated
oil. I will attach the most recent link, as there has been a
change, in the formual, of how the diesel rated oils are made up.


What you should use in your "Stude" is the older CI-4 or CI-4 Plus
diesel rated oil, which is still available, but may have to look for it.

The following is an earlier discussion:


Hope this helps

1964 Daytona
glen Brose
Tumbleweed Flats, AZ

06-20-2007, 11:22 AM
Thnaks Tu Papa

David G. Nittler

Mike Van Veghten
06-20-2007, 01:59 PM
Funny thing...I've been using plain ol Castrol GTX in my 259 powered Lark for the 8 or so years that I've owned it...as a daily driver...with no ill effects!

The ONLY place current oil MAY give fits is the cam shaft and lifters.
If you are concerned, add a can of GM's "EOS" at oil changes. That is what it was designed for...cam and lifter breakin.