I HAVE 2003 WRANGLER X. JUST CHECKING FOR INFO FOR THE TYPE OIL TO USE. BOUGHT JEEP AND HAS NO OWNER MANUAL.....
THANK FOR ANY HELP
JANET
THANK FOR ANY HELP
JANET
Yep all 4.0L and 2.5L engines are cast iron blocks.Oil is becoming my least fav subject, but I am only trying to learn here too. I think I remember recently reading here that Mobil full synthetic showed more than normal iron content when drained from these cast iron blocks, according to testing. Does the 2003 have C.I. block or were the test results from warmer climates? Im really trying to find the best oil to use as well.
Or Utah or Oregon where -18 winters are not uncommon. Shame on you Jerry.X2 on the above advice on using either of the two suggested viscosities. The brand absolutely does not matter with today's modern engine oils. Valvoline, Castrol, Mobil, Walmart, Shell, Pennzoil, Havoline, are all superb. I personally run Valvoline but would happily run any of the others if Valvoline were to somehow disappear.
Conventional oil is fine too in most climates. Synthetic oil only becomes worth the extra $$$ during extreme cold conditions like occurs in places like Minnesota, North Dakota, etc. where it flows better.
They were definitely included in the etc. category.Or Utah or Oregon where -18 winters are not uncommon.
Can't help myself. I am bored !They were definitely included in the etc. category.