That is a throttle body injection system.
10w-30
Most parts are interchangeable as long as it's the same engine type.
go to www.google.com click on images and type in 1989 jeep comanche multiple images will appear
I fuel injection its underneath near fuel tank, if carb it doesnt have one however depends on the carb type, it may have gauze filter in inlet on carb.
As 2003 Jeep Liberty uses 5W30 engine oil. It can be synthetic, conventional, or a blend.
5w30
80w90
The best oil viscosity for a 1989 Jeep Cherokee Laredo is 10w-30. This type of oil is designed to give a good balance of lubrication and protection.
5w30
The recommended type of oil in a 1986 Jeep Comanche 2.8 liter engine is 10 W 30. This oil can be purchased at any auto parts store.
dextron II
Mopar ATF+4