Straight 30 weight most of the time.
It's an old story, but one I've told a few times. Anything but Pennzoil. Why? Well, my buddies dad owned a transmission and radiator shop, that would do any kind of mechanical work outside of radiators and transmissions that any customer needed. After I graduated high school and ran off to college for a little while, then dropped out of college and came home, I roomed with that buddy. I also helped out a LOT when they were swamped or when they were working on their race cars. They ran dirt track, both of them, and especially after they switched from SS to IMCA, there was ALWAYS a lot of trying to dial those cars and power plants in.
They were pretty good in SS, good enough to have a few different sponsors. One day, a fine warm afternoon, a rep came out and talked to Dave about sponsoring him. Valvoline to be exact. They talked for a while, and Dave didn't take him on, but the guy did try awful **** hard to get him to use Valvoline in both the shop and on the track. Dave was a Castrol guy.
The Valvoline guy said he couldn't say anything bad about Castrol, and asked me what I liked to run. I was a Valvoline guy, also used Castrol or Havoline as they were all really popular and had good stuff. I told him that, and the Valvoline guy said, yeah, all solid choices, just stay away from Pennzoil. That stuff sucks.
I took that for what it was worth. A Valvoline guy had JUST told me that Casrtol and Havoline were great lubricants and bashed but one major brand. This was during the time that Penz had a lot of (probably) urban legends going around about just how bad it was.
I didn't start using Penz products again until I joined this form a long time ago when PUPPPPPPPPPPPP (+p+jhp or however many P's it was) was the flavor of the century.
Still like Valvoline and Castrol. Have run quite a bit of Havoline I think. I think whoever made Havoline makes Motorcraft blend, and I had a lot of free Ford oil changes from buying 4 new Fords in a 3 year span.
So for carburetors, those were the big 3. For injectors, they were still the big 3. And up until I started driving a turbo, I still liked straight 30. Give or take - about 4k on an oil change. I drove everything like I stole it, and I drove it a lot. 3k was conventional wisdom. my grandfather was the one who told me that 3k was BS. He recommended 5. I split the difference because I was Speedy Gonzales.
Walmart sold Fram filters, so I used Fram filters. We didn't get an Autozone until I got out of high school......
Ya'll remember when wally worls sold plug wires? mr_boring 'members when wally world sold plug wires