It looks like you're new here. If you want to get involved, click one of these buttons!
STP as comfort food...
Result--noisy engine with the oil pressure light coming on at idle.
The thing has 160K+ on it and unlike later model Toyotas apparently didn't sludge.
Anyway-- STP (or a no name variant thereof) quieted the engine and turned out the engine light on idle. Well worth the 79 cents I paid.
Any other positive stories about the joy of STP out there? I know lots of people who say that modern oils don't need this extra dollup of zinc and I think you're right if the engine's new. But what about squeezing a few miles out of that old beater?
I also cleaned up an old carburator by dumping in Marvel Mystery oil but that's another story.