Any examples? I'm new to automobiles so excuse my ignorance. My folks normally just drive to the dealership and get the oil and filter changed, no specifying what brands. I on the other hand, I like getting my hands dirty, but due to the previous statement, cant learn from either of them.

 

Wix

 

Yep. Wix or Napa Silver for 3,750 mile oil changes or Napa Gold for 7,500 mile oil changes. Mopar from Walmart for short intervals is fine too.

 

Well that was fast. Didn't have to think at all did yall? I'll surething try them out, just read on like 10 other forums WIX is best too. Thanks a load.

 

Wix makes Napa's filters.

 

Of those choices, 0W30 would flow the easiest at any temp below operating temp.....at operating temp, all of those weights (in the pop quiz) flow the same....Motor Oil 101.

 

Whats an opinion on K&N oil filters? Better or Worse?

 

Yeah, red through Motor Oil University today. Good stuff. They all go to 10cS at 212 degrees. So wouldnt 0w-30 or 0w-20 be best for the Jeep and not the manual reccomended 10w-30?

 

I wouldn't use XX20 in any vehicle unless the manual so stated. However, I'd be willing to bet that if 0W30 or 0W40 were readily available 20+ years ago, as they are now, the manual would have said either would be acceptable to use.

Regarding the K&N filter, I believe it's made by someone else and has a $6 nut on the end.

 

Yep, a $6 nut.

If you change your oil every 3,750 miles or less a Napa silver will be fine. 7,500 miles, go Napa Gold.

 

Hudson, you'll learn in time that whatever Cruiser54, Djb383, and a few select others says is the law. They provide excellent advice. Purolator is also a good filter, but absolutely stay away from the orange can of death. Some of us have cut a few open, and it's something out of an engine's horror movie. lol

 

Rotella 15W-40 and Napa Gold. Go together like peas and carrots. Just like Forrest Gump said......

 

I always run either a napa gold or a napa silver and valvoline conventional 10w30

 

Thanks a ton for the help guys, really apprieciate it. And I have got a little ways to go regarding the forum as a whole, but it comes in time i guess.

 

Dayum! I'll take that as a compliment, thank you. However, when it comes to knowing the XJ inside and out, bumper-2-bumper, Cruiser and others have forgotten more than I will ever know about the XJ. I know just a little bit about cooling system function/performance/myths/maintenance. If just one (hopefully more) newbie or lurker were to read a post I made and then said to him/herself "self, it's been a while since I popped the hood on the old XJ....maybe I ought to go out have a look"....then my day is made. Keep poppin' those hoods. LOL