dino oil and ZDDP additives ? anybody

CultClassik said
Still a big deal I think. I just add half a bottle of Lucas break in additive in both my old flat tappet engines with 5 qt. of Walmart 10w-30 and haven't had any issues. The stuff is like $10 a bottle (I get it from Summit for $10 a bottle, free ship at $100).
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I'm still thinking of doing that. By doing a 10w30 with additive. I would only have to buy one (type/brand/weight) of oil for all my cars. And just dump some ZDDP in my old 273.