I have a 2001 jeep wrangler 4.0 with 110,000 miles. I bought it used so I have no idea what kind of oil the previous owner used. I do know the valve train looked spotless when I replaced the valve cover gasket. Anyhow I have been looking around on this site trying to figure out what brand of oil to use. Can anyone tell me what brands of oils produce the lowest wear numbers in the 4.0 engine. I would like to use a 10w-30w. I don't really care if its synthetic, high mileage or dino since I'm not planning on extended oil drain intervals, I'm an old school 3,000-4,000 mile oil change guy. What I'm looking for is an oil that produces the lowest wear numbers with a good cleaning package. Thanks.
Sorry everyone this is my first time posting on this site, I should have been in the UOA Gasoline section...............
Sorry everyone this is my first time posting on this site, I should have been in the UOA Gasoline section...............
Last edited: