Oil for Classic Car

[nfs480]

I recently inherited a 1967 Pontiac Grand Prix and was wondering what the best oil would be for this engine, I think it's a 428.

Thanks!

 

[eljefino]

HDEO 10w30 would be a good start. 15w40 if it was rebuilt, and "built loose".

Summer cruiser? Race car? Stored winters?

 

[Maximus1966]

Shell Rotella dino 15W40. Oil filter: Purolator PL25288.

 

[mrsilv04]

Originally Posted By: eljefino
HDEO 10w30 would be a good start. 15w40 if it was rebuilt, and "built loose".


Exactly. Shell Rotella either way.

 

[widman]

As said above in simple terms. If you want to know more, click here
Selection of the right motor oil for classic cars

 

[Rob_Roy]

Your favorite flavor of 15w40.

 

[nfs480]

Originally Posted By: eljefino
HDEO 10w30 would be a good start. 15w40 if it was rebuilt, and "built loose".

Summer cruiser? Race car? Stored winters?


It does have a rebuilt motor, not sure if it was built loose or not. It will be stored in the winters and will be a summer cruiser. No racing.

Thanks for the help guys!

 

[tommygunn]

Since it'll only be driven in the summers, I'd go for annual (prior to your summer trips that is) OCIs with any 15W-40...should be good to go with that.

For precaution-sake, I'd consider "fogging" the engine before the winter time hits, with either Sea Foam, Marvel Mystery Oil, or some other top-end "fogging" oil, to keep the cylinders nice is lubed while it's not being driven. about a tablespoon of either can't hurt down each cylinder.

 

[67lemans]

I use rotella 10w30 15w30, and havoline 10w40 in my older vehicles. Gotta love an old Pontiac!!

 

[motorguy222]

Super Tech HM 10W-40.It has zinc,moly and boron.It has 850 parts of zinc,80 parts moly and 230 parts boron.It is thought that this oil is really Mag1 Synthetic Blend oil or a close version of it.

Mag1

If not Super Tech,Mobil Super HM 10W-40,it is Resource Conserving and a syn blend.The Mobil has zinc and titanium in it.