diymirage said

hate to threadjack, but what do we suggest for a flat tappet cammed 360?

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scatpackbee said

I highly recommend Joe Gibbs Driven HR-4 Synthetic oil 10W30.

Great oil formulated exactly for what our older pushrod engines need, with a rust inhibitor used in the Military.

They also have a synthetic 15W50. HR-1

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