The problem is that when FCA redesigned the 3.6L in 2017 and raised the compression ratio to 11:1, they did jack-all to use it. It was the same ECM tune running 87 octane. Really? Why not turbocharge it instead? My JL was heavily modified and was very capable, but the weak link was the engine. Supercharging is out there for it, but you have to be REALLY careful--it is already a static 11:1 so you can/will overpressure the cylinders.
Aside from the thousands I spent removing all of the stock garbage suspension and re-gearing it twice, I was willing to overlook that, but at 50K the plastic oil cooler starting leaking and I changed it at 70K. I changed it because I also noticed potassium rising in the UOAs and so I assumed that was part of the leaking. It was not--even after changing the oil cooler and running a few short OCIs, the potassium continued to rise and therefore it was either a partially blown head gasket or a cracked head/block. I suspect the latter and at that point, I cut my losses. I could have swapped in a hemi, but jeez man, I should not have to add a 5.7L or a 6.2L to get decent power. FCA is FAR BEHIND in engine design and according to the last epiphany they released, the 3.6L is the stalwart of the line and will remain.
Jeep sales have been declining and I would opine they will continue to do so. Too many quality issues for too much cost with too little innovation. Hard pass for me...
