I went down an Internet rabbit hole and found myself reading the model year 1969 Pontiac owner's manual. I thought the oil specs might be of interest.
Old Car Manual Project
Oil and ATF change intervals are on the previous and next pages.
Oil: 4 months/6000 miles, whichever is first. 2/3000 for severe service.
ATF: 2 years/24,000. 12,000 miles for severe service.
Old Car Manual Project
Oil and ATF change intervals are on the previous and next pages.
Oil: 4 months/6000 miles, whichever is first. 2/3000 for severe service.
ATF: 2 years/24,000. 12,000 miles for severe service.