Hello, I was wondering if anybody knew what filter my 68 sprint 6cyl needs? Also what weight do you recommend? Thanks Corey

Cory ,I just put a pf24 ac filter on and put in 15-40 and and can of stp oil treatment in. The oil pressure did come up a bit at idle.I was looking for that but this winter I'll go back to 10-40. Ron

Since I don't drive mine as much, I like 5w-50 Castrol synthetic. The synthetic is a little more consistant in viscosity, so I think the heavier weight is okay and it also has a less tendance to congeal compared to standard oils.

Thanks for the advice, how much oil will the motor hold? Also how much of and what should I put into the 3spd manual and the rear end with posi? Thanks for all the advice, Corey

Don'e even think of putting synthetic in an OHC.

C'mon PMI, back it up with the reason.
Don't be one of "those guys."

Quentin,
Are you serious about not using synthetic in the OHC? Mine has been totally rebuilt and I was going to do just that after it is broken in.

The make-up of synthetic oil does not resist the sliding friction that results from the cam/follower interface. If you run synthetic - even in a broken in engine - you will eventually be replacing the cam and all 12 followers. And much sooner than you think you should. Run Shell's Rotella-T instead.

And make sure you get the old spec oil, they've changed to CJ-4 for the new diesels and took out most of the good additives. Check back for the appropriate thread on oils for the details.