Beware 3.6 Penstar

[seven30]

Factory spec oil weight is too light for such a high rpm reving engine.

Light engine oil is for CAFE standard at the expense of engine wear and consumer's pocket

???? Hows does that compute? Light oils cools bearings better at high rpm.

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[seven30]

I’m finally getting a new engine! No thanks to FCA.

Back when my insurance company approved my vandalism claim on my glycol contaminated transmission, they also approved the replacement of my coolant consuming engine. They had the evidence they needed that FCA engineers were not interested in investigating the internal leak, fixing it or replacing the engine (from 1000 kms to 32,814 kms) in spite of the oil analysis reports and volume of coolant I kept having to replace.

My insurance company adjusters (several of them involved) were sickened by the treatment I received from FCA and dealerships and tossed in a full r n r engine replacement I’m having done next week.

Old thread but who is your carrier?

 

[Jeeperjamie]

Glad to say I got 70,000 miles on mine and never had a issue so far. I've never had to even top the coolant off one time.

 

[Maximus Gladius]

Old thread but who is your carrier?

My insurance carrier was Desjardins

 

[seven30]

Count our selves lucky.
Imagine all the weird issues and rumors that will be posted when electrics become common.
Oh you have the brand X mosfets? Those develop reverse leakage at subfreezing temps causing motor field burnout. And firmware. OMG. Forget about it.

 

[HNTR]

I feel like I’m watching a train crash and can’t take my eyes off of it with thread. I just purchased a 2023 Jeep Gladiator Mojave with the 3.6 gasser and only have 1,400 miles on it. I’m trying not to worry right now. Geez, if I had these kinds of issues, I’d be pissed off too and probably try to head some warnings. That said, and unfortunately, there will be certain cases like this. Lemons are real. And a terrible run of manufacturing can happen by any manufacturer. I hope Mopar got this shit figured out on the ‘23. Sorry that you’ve had such a bad run with your Jeep.

 

[seven30]

I feel like I’m watching a train crash and can’t take my eyes off of it with thread. I just purchased a 2023 Jeep Gladiator Mojave with the 3.6 gasser and only have 1,400 miles on it. I’m trying not to worry right now. Geez, if I had these kinds of issues, I’d be pissed off too and probably try to head some warnings. That said, and unfortunately, there will be certain cases like this. Lemons are real. And a terrible run of manufacturing can happen by any manufacturer. I hope Mopar got this shit figured out on the ‘23. Sorry that you’ve had such a bad run with your Jeep.

Ive got a 2022 Mojave 3.6. 45K. So far zero issues and its seen a bit of flogging from many 1000mile loaded trailer pulls to redline off road nonsense. Clutch is really great now too. I will say the engine tune is not that well suited to the six speed. It comes on really strong around 5k buts its tough to keep it there on twisty dirt roads. Jeep, drop a bomb on the competition. Give us a 7 speed sequential option!

 

[PlayfulBird]

Considering all the YT videos and reports of Cams being unavailable or backorder and waitlists with 12000+ orders, does a preemptive inspection or even change of rockers make sens?

 

[Hootbro]

Considering all the YT videos and reports of Cams being unavailable or backorder and waitlists with 12000+ orders, does a preemptive inspection or even change of rockers make sens?

Your easiest option is to do an oil analysis and see where your Iron levels are before getting wind up to do other things.

 

[ShadowsPapa]

Considering all the YT videos and reports of Cams being unavailable or backorder and waitlists with 12000+ orders, does a preemptive inspection or even change of rockers make sens?

What Hootbro said, then look at your odds, the PERCENTAGES, still likely under 1%.
It looks worse due to the sheer numbers of these engines (and, it is the internet......)

 

[PlayfulBird]

Your easiest option is to do an oil analysis and see where your Iron levels are before getting wind up to do other things.

That makes a lot of sense. And easy to do for sure.

What Hootbro said, then look at your odds, the PERCENTAGES, still likely under 1%.
It looks worse due to the sheer numbers of these engines (and, it is the internet......)

Yeah, I thought so aswell, but I am a bit bummed that the spares/replacement parts are less than ideal for almost any vehicle right now... I really hoped that Wranglers and Gladiators would not be as affected due to the popularity and the modding/aftermarket world.
The algorithm of media just got to me again, for sure...

Thank you for the input.

 

[BearFootSam]

I think overall the 3.6 is one of the more reliable midsize pickup engines on the market now. PFI, naturally aspirated, relatively low complexity and vast parts and pulled engine availability.

Many other makers have jumped on the downsizing wagon but I don’t think highly stressed turbos are the best fit for purpose.

Pentastar isn’t perfect but it’s darn good. Cheapish to maintain, and has a well matched power curve. 4.10 gears and the 8-speed complement the broad flat torque curve for 4WD use. Turbos by nature generate a lot of heat which is not desirable when crawling along at altitude. Diesels are ok by virtue of much higher thermodynamic efficiency, but turbo gasoline engines IMO are better suited for high speed operation. I don't know what the cooling system is like in the new tacomas and I wonder if they can run nearly as cool as the jeep. My JTR can put along all day without breaking a sweat.

 

[JTmac]

Has anyone seen official statistics on the quantity effected by the cam issue? I assumed it was rare, and mine was fine…. Until it wasn’t.
Saw a mechanic post somewhere that he has done “hundreds” of these. One guy. At one shop. Thousands on back order. It’s making me doubt the rarity and wonder if it’s not a matter of if but when for this issue.
The recent TSB says a manufacturing defect listing all model years of North American gladiators thru August 2024 production.

 

[JTR SPARTAN]

I feel like I’m watching a train crash and can’t take my eyes off of it with thread. I just purchased a 2023 Jeep Gladiator Mojave with the 3.6 gasser and only have 1,400 miles on it. I’m trying not to worry right now. Geez, if I had these kinds of issues, I’d be pissed off too and probably try to head some warnings. That said, and unfortunately, there will be certain cases like this. Lemons are real. And a terrible run of manufacturing can happen by any manufacturer. I hope Mopar got this shit figured out on the ‘23. Sorry that you’ve had such a bad run with your Jeep.

I have a 2021 Rubicon 3.6 gasser.........drive it like I stole it and the only issue to date is that damn sway bar e-disco

 

[ShadowsPapa]

The recent TSB says a manufacturing defect listing all model years of North American gladiators thru August 2024 production.

Because they have no real clue.
Manufacturing issues is a very generic term and listing all of those models is also just covering bases since that TSB is simply a discussion or passing along part numbers. It's not suggesting or stating that all are impacted.
We don't know, and it almost appears they don't know for sure.
Manufacturing defect can mean that out of ever 10,000 cams there were issues with 150, just for example.

That's really a very generic communication saying here are the kits you will need for repairs for these models and years.

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