I researched this and figure I have read most of what's on the internet about whether a stock flat tappet engine needs higher zddp levels or not and I'm still not convinced either way by what I've read. But my gut tells me no they don't just based on all the old gm trucks I see around still running.
But today my question is if I had to pick a SN rated oil and was worried about this what would be a good oil to use. If you can explain what's in your pick that would give better protection that would be nice.
To help with your pick I have about 15k on a new TBI crate engine and I prefer to stick with 10w30 but if you can convince me other wise I'm open on that. I also want one I can use year round. I don't think it gets cold enough for that long of periods to go to a 5w30 plus I'm thinking of going to yearly OCI's.
But today my question is if I had to pick a SN rated oil and was worried about this what would be a good oil to use. If you can explain what's in your pick that would give better protection that would be nice.
To help with your pick I have about 15k on a new TBI crate engine and I prefer to stick with 10w30 but if you can convince me other wise I'm open on that. I also want one I can use year round. I don't think it gets cold enough for that long of periods to go to a 5w30 plus I'm thinking of going to yearly OCI's.