So I just picked up a dirt cheap 99' S10 with the 2.2 4 cylinder and 5 speed manual. Unknown service history, but it seems decently maintained. One owner with 148K on it. Was looking for an oil suggestion. I was tossing up between PYB 10w30 or Rotella T5 10w30. Another thought was using up my stash of Rotella T6 0w40, but there is a couple small oil leaks and I don't want to make them worse, so not sure about the blend or full synthetic. Will not be a daily driver, mainly a yard dog, just hauling if need to be. What do you guys think?