Inliners International Forums General Discussion Engines Oil for a Chevy 250?

If you're talking Valvoline make sure it's VR-1.

I wouldn't even use that. There's several oils out there for older engines. I used Brad Penn oil and it did very well. Modern oils have too much bad crap and not enough good crap to work well with our old engines. I wiped a cam that way. Local machine shop stocked Brad Penn and swore by it so I started using it instead and only resorted to VR-1 (and ONLY VR-1) when I couldn't get the good stuff and needed to top off. VR-1 is the most common of the types of oil you need but, again, I still wouldn't rely on it alone.