Oil Recommended for pcm 351?

[dshaff24]

When I got the boat I just used mobile 1 Non synthetic... Then I think I read somewhere about oil that doesn't contain something... Not sure where I read this and I searched for answers with no luck..

So 351pcm What OIL and wieght it recommended? Im going to change it this week! Its great to know im 2 weeks away from boating season!

[csuggs]

I think I just put 10W30 Synthetic Valvoline in mine.

[duckseatfree]

I just put 10W40 synthetic in my'86 351pcm w/ a little bit of sea foam

[Okie Boarder]

I used the Shell Rotella since it has the higher zinc content. That's probably what you were remembering...zinc content.

[beast 496]

Fairly high Zinc content is what you want for flat tappet cams. Newer designed engines, ie the Vortec GM has roller cams as well as the GT 40 Ford. Al

[michael hunter]

Mobil 1 15w50 full synthetic is flat tappet approved. I have been using it since the first oil change.