1966 mustang 289 V-8 What oil weight

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11-21-2007, 04:59 PM

hotstud737

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Join Date: Sep 2007

Posts: 41

1966 mustang 289 V-8 What oil weight

I live in phoneix,arizona what engine oil for here,It never gets below 60 in the winter and 100's for the summer 20w-50 what about that weight for all yr round

11-21-2007, 05:06 PM

cmanf

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RE: 1966 mustang 289 V-8 What oil weight

Anything Mobil one

11-21-2007, 05:10 PM

Oxnard Montalvo

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RE: 1966 mustang 289 V-8 What oil weight

Here's a link that should answer all your questions.

Motor Oil

11-21-2007, 05:30 PM

IntakeGasket

Join Date: Nov 2007

Posts: 2

RE: 1966 mustang 289 V-8 What oil weight

My first post and it's about oil

If you are running the stock flat tappet lifters, then you need an oil with a higher zinc level than most oils today. Zinc screws up catalytic converters, so they've taken it out of oil, but the side effect has been that flat tappet lifters eat the cams. Shell Rotella for diesel motors is probably the best choice since it has higher levels of zinc.

If you are running roller lifters, then any off the shelf oil should work just fine.