I think if there’s even a remote possibility of a warranty consideration somewhere in the future, you've answered your own question right out of the gate, Bob.
That's absolutely right. For less than half the cost, get the lowest price synthetic 5W-30 or 10W-30 at Napa or Walmart or Costco or Amazon or wherever you shop. For a stock slanty, that Driven is overkill. For peace of mind, and to stay in the good graces of your engine builder, maybe run it for one oil change in case something goes wrong during or just after break-in.
Last I knew, Napa oil was made by Valvoline. But Ashland spun off Valvoline into its own company, which was recently bought up by Saudi Aramco.
What's your opinion of the Lucas oil?
Driven makes a break-in oil as well
But I agree, its probably overkill to run it in a stock slantyI know a distiller who makes their stuff, Chevron too. He laughs at how expensive their gun oil is. I am sure he would do the same with their regular.
I'm not a fan. ZDDP levels over 2000 ppm have shown to cause pitting and spalling in engines. That's twice as much as in oils that perform really well in OHV flat tappet engines.
On a new flat tappet cam engine, I'd keep the zinc levels at least 1200 ppm. That's good oil that he recommended, especially on a new engine. My slant with over 100k miles gets just rotella T4 from walmart.
I run the VR-1 10w-30 in my Duster. Good stuff
For a completely stock slant six where you can damn near open the valves by hand? In the OP's application, pricey oil is a waste of money unless it's to stay in his builder's good graces like S'cuder mentioned.
What would be a good recommendation for someone on a budget?
