Trying to find others who have trouble with thier 2020 jeep gladiator sport 3.6 motors

[MSFTMatt]

To make things worse - the desire, and/or tendency, of Jeep owners to want to keep their engines running under 3,000 RPM can cause issues- increased cylinder pressures and heat, forcing them to run below their peak RPM area, that generates more pressures on the heads and gaskets (stop trying to force low RPM! Let it run as designed)
So if taking care of an engine means babying it and trying to force the RPM to stay low, even when things are loaded, that's actually on the edge of abuse.

Can you expand on this please or point me to some more info on this? I am not familiar with this and would be stoked to learn more, I tend to drive with a feather foot to try and 'baby' mine.

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[ShadowsPapa]

Can you expand on this please or point me to some more info on this? I am not familiar with this and would be stoked to learn more, I tend to drive with a feather foot to try and 'baby' mine.

The combustion pressures are typically higher, the forces are greater on the engine parts trying to produce the same power you could get more easily with more RPM.

It's a less complete burn as well, increasing carbon deposits and actually forcing more "blow-by" past the rings. People who try to keep the RPM down artificially may experience less effective PCV, leading to oil consumption through the PCV system, which relies on vacuum and air speed to work more effectively.



You don't have to be what some call "lugging" the engine to be in an inefficient place not the best for the engine.

 

[ShadowsPapa]

One of the best explanations I've found - applies.
The act of pedaling a bicycle up a hill is like the force of the combustion process on the piston. Think of your legs and how hard they have to push down - PRESSURE, not only mechanical pressure, but combustion pressure as well - more forces pushing out on the chamber walls, head, gaskets, rings and piston all the way down to the rod, rod bearings, main bearings and so on.


Pedaling up a hill in 1st gear on a bike is super easy right? now think about how difficult it is to bike up a hill in the highest gear. You're going to be standing up on the pedals using all your weight to try and pedal. It puts a lot of stress on you, the pedals, on the chain and sprockets. Its a high load situation

 

[RodRecket]

Engines are designed and made by humans. All of the parts are designed and made by humans. Even the robots used are designed and made and programmed by humans.
Over 20,000,000 of the Pentastar 3.6 engines out there, now and then one is likely to blow a gasket.
As we say here "@#$% happens" (insert whatever crude word you want in there)
It's not common, but geesh, out of the millions of these made to assume none of them will EVER blow a head gasket, regardless of care? Not reasonable by any stretch of the imagination. Someone, somewhere, at some time, may spin a rod bearing, or main bearing, break a piston, blow a head gasket, crack a block or head, break a valve, have an oil leak, it's going to happen. 20,000,000 (20 MILLION) of these, someone is going to have "bad luck".
In manufacturing there's also a "stackup of tolerances" where things may be in the correct "range", within that 0 plus or minus .1 and the next part is on the other edge, and you have a looser fit than the next guy.
It's like poker - once in a while by pure chance you get the bad hand and nothing you can do will win (other than being a great bluffer)

To make things worse - the desire, and/or tendency, of Jeep owners to want to keep their engines running under 3,000 RPM can cause issues- increased cylinder pressures and heat, forcing them to run below their peak RPM area, that generates more pressures on the heads and gaskets (stop trying to force low RPM! Let it run as designed)
So if taking care of an engine means babying it and trying to force the RPM to stay low, even when things are loaded, that's actually on the edge of abuse.

This is a good point. While i don't baby it around town or unloaded, i have to admit seeing the high pressure oil pump kick in at 3k feels odd when I'm at highway speed (70 + mph). I see 3k a fair amount when I'm pulling the small camper.

 

[imallcrawl]

I blew my head gasket on a 72 Monte Carlo because I was young and dumb and did not change/add any oil to it. How did you blow your head gasket on your 2020 JT?!! Just curious

 

[shovel74]

did

Don't know took very good care of the Jeep did all mechanic up keep and oil changes so we don't know why it blew

 

[ShadowsPapa]

Don't know took very good care of the Jeep did all mechanic up keep and oil changes so we don't know why it blew

As a mechanic - I can tell you, sometimes they just go.
I don't understand people trying to find a single reason or cause for this one specific head gasket to go.
If things didn't break for "no apparent reason" (at least to non-technical people) there would be no mechanics.

Care doesn't matter. Oil changes won't have anything to do with head gaskets.

 

[ShadowsPapa]

I blew my head gasket on a 72 Monte Carlo because I was young and dumb and did not change/add any oil to it. How did you blow your head gasket on your 2020 JT?!! Just curious

You think oil mattered?

 

[imallcrawl]

You think oil mattered?

I would think so? If you run an overheated engine without oil and drive 90-100 mph on the freeway like a bat out of Hell, don't you think that could blow the engine or no? Whatever the case may be, being a 15 year old idiot definitely blew my engine

 

[ShadowsPapa]

I would think so? If you run an overheated engine without oil and drive 90-100 mph on the freeway like a bat out of Hell, don't you think that could blow the engine or no? Whatever the case may be, being a 15 year old idiot definitely blew my engine

The key was you over-heated it.
You aren't going to go very far without oil in any case - a few miles tops.

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