Oil viscosity and brand change?..

Lucas Hot Rod oil?They have other weights, I get it in 6gal containers

View attachment 1715900802
Sorry, but I think that stuff is awful. It has twice the amount of ZDDP that is useful, which is too much by far. It is only made from a Group II base stock. With that much anti-wear additive, it's really only good for racing, but there are so many racing oils that are better. At almost six dollars a quart in the six gallon box, it's expensive. I do like those second generation boxes, though.
Lucas has a couple products that really shouldn't be on the market. The hot rod oil is one. Another is the oil stabilizer. That's real garbage. They may make some good products, but because of those two, I don't trust any of them.