What is the filter # and what oil do i use?

What is the filter # and what oil do i use?

Added (1). I have a 1988 Ford motorhome Econoline 350 ( 7.5? ) How many quarts of oil do i buy and what is a good filter. I hear a ticking and want to change the oil and filter. Should i use mobil 1 oil and what filter if i use synthetic do i need a special filter? 5-20? 10-30? Oil. The filter currently in it is carquest R-85515.

I wouldn't waste my money on overpriced synthetic oil for that old thing. I'd go with 10/30 or 10/40 on the weight. The parts store will have a book with different filters in it, compatible with that engine.

Hey before you try and play lube boy and mess up your motor r transmission just to try and save $5 how about looking for oil change coupons and deals in your area. It never pays to do your own oil changes… Especially if you don't have a clue WTF you're doing.