My '09 started this at around 15,000 - 16,000 miles. At 19k now. It's hard to determine how much it uses because the dipstick isn't accurate. With a fresh oil change the level is about 1/4 of the way over the full line. I'm guessing it's going to use about 1qt every 3k miles, which sucks but really isn't excessive.
Interesting emissions issue here. If they're burning oil that raises the HC. If all of them do it I'd be pretty sure Chrysler's not in compliance, and that it affects MILLIONS of vehicles. The EPA may be the "big fix" on this. I imagine the cost of this recall could finally put Chrysler under for good.
Some precedent on this. Back in the mid to late 70s VW had a serious oil consumption problem on their early water cooled cars, 74 - mid 79 IIRC. Problem was bad valve guide seals, which would harden by 15k miles and the things would start sucking a quart of oil in 300 miles. Owners got used to them not using oil, stopped checking it at fill-ups and pretty soon engines were knocking, siezed, etc. VW responded by putting a sticker around the filler neck thet read "Check Engine Oil". (Kinda like Jeeps "Hot Oil" light fix, huh?) Well, obviously that didn't fix the issue. Unless pressed legally VW refused to fix them in service, claiming owner "abuse". But, in mid-79 they quietly released a new type of valve guide seal and the real issue came to light. Feds caught on and forced them to buy back 200 Rabbits at random for field testing. All of them failed emissions, so EPA forced VW to recall all of them and replace the seals. Shortly thereafter, the FTC made VW reimburse everyone who'd had to pay for a new engine, then made them put info re the reimbursement program on every new vehicle's window sticker for something like five years.
Point is, Chrysler can run, but they can't hide. If this causes an emissions issue, which it likely does, it explains the 5w-20 bit and likely indicates many of the JKs are out of compliance on a Federal level. Government Bailout II, anyone?
Last edited by SoK66; 08-15-2011 at 08:28 AM.