2016-2021 WK2 JCG was the PUG (Pentastar upgrade) and the blasted CAFE regulations made them 0w20 instead of the musical viscosities they once were.
Well, if you want to say what went wrong with the car, I would appreciate it
Sure, I deleted because it used 5W20, not 0W20. Engine was the only solid thing about it (it was a Cherokee, not a Grand). The nine speed transmission never shifted properly and would clunk at 40 mph when shifting going up or down a grade. They always said it was a software problem and did countless flashes; none worked. Transfer case went out (AWD Limited) at about 70,0000. Had a TSB out for it, but even though it was the same transfer case part number, they would not cover it because it wasn't the more off-road 4X4 system. All kinds of electrical gremlins, especially in the shifter. Also had to replace the battery current sensor 3 times (went through batteries about every 2 years). This last year, at about 85,000 miles, the dreaded oil cooler housing leak started. This is something in particular you should watch for if yours has not had it replaced. The housing is made of polymer and eventually heat from the engine causes it to warp and not marry up flush to the metal on the engine correctly, so oil leaks onto the engine valley and you can't see it until there is enough built up to drip on the floor. Even then, if you have one of those plastic air dams under the engine for better fuel economy, you might not see it for an even longer amount of time. Luckily I saw it when changing my oil and found the mess, but you really need to be checking your oil level regularly. The fix is a metal housing, but they are hard to find sometimes. Dorman is the only one I know of making them. Job isn't too bad to do yourself, but still a pain. This isn't my first rodeo with Dodge/Chrysler/Jeep. Had them for the last 30 years and it is always something. So tired of it; guess I'm a slow learner. I got rid of this Jeep and replaced with a 4Runner.
Thanks! I will check for that oil leak. Hopefully he has good luck
That’s the treatment my brother’s 2016 receives. The 6 quart boxes are nice.
I run the heck out of my 2018 JL 3.6 with mainly Mobil 1 EP 0w20 and Fram or M1 filters. I'd even run a Supertech filter and would sleep well. I tow with mine, too. Purrs like new at 78k miles. No need for the heavier oils. It'll run 300k or more on a good quality 0w20. I change my oil mostly at 5k but have gone as far as 7500. Oil analysis showed it to still be just fine after 7500.
What weight M1 are you using in the hemi?
0w20 for the 5.7 hemi as well. Quietest the engine has ever been using this oil. Zero start up tick
My wife's car is a 2019 Grand Cherokee, I do the oil changes. I've been using mostly Pennzoil Platinum because with the rebate is the cheapest option, but other times I used Pennzoil Full Synthetic, Chevron Havoline (the 6 quarts box, this is the cheapest option with no rebates), al 0w20 no problems so far and I could not tell any difference between those oils, both in oil pressure and temperatures. As for oil filters I've used the Mopar, K&N, Super Tech, for the price Super Tech is very good.
I generally do one at the start of summer as I do a lot of towing in the summer with my Durango and another one during the winter months. I’m sure I could do one once a year but I drive this thing quite spiritedly, I drag race it at the local track during the spring/summer and tow as well. So usually by the end of fall, I feel more comfortable draining that oil out and starting fresh for the winter months lol.
Have a 2015 JKU I gave to my oldest and it has a tick tick tick. Need to open her up and do the rocker arms. These are a known issue, with several updates to the rockers over the years. Probably will replace the cam that has the bad rocker arm as well. (Got some metal in the filter). I don’t think 5W30 would have given anymore life than 5W20.
