Eco diesel or 3.6 gas??

[NachoRuby]

I guess. I can’t wait for my warranty to be over so I can make it better and simpler like every other diesel owner. 64k miles is still a big difference and years of additional piece of mind unless you pay up for the extended warranty.

You don't have 64000 more miles of powertrain warranty, you have 40,000 more. Standard Powertrain warranty is 5 years/60,000 on the gasser.

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[JET_83]

I see a lot of debate about maintenance and costs so here is mine coming from an 09 JKU.

Cost to fill in NJ based on when I fill my tanks with todays costs in my area:
JT: $97 (16 gal @ $6.05)
JKU: $90 (19 gal @ $4.73)

Now with the JKU I would get about 280-320 miles per tank which is $0.28- $0.32 per mile. The diesel gets 350-420 miles per tank based on my usage which is $0.23-$0.27 per mile. Over 5k miles that is a savings of $250.

Making it simple since I change my oil every 5k for both.

JT: oil was $80 for two jugs from advanced auto and $40 for a filter online so $120 total.

JKU: oil was $23ish from Walmart and Wix/Napa filters were about $8. Total of $31.

So far we have a win for the diesel and win for the gasser with the diesel coming out on top with a net savings of $160 so far per 5k miles.

With Def I have bought 2 jugs over 6k miles so far but I have no idea what I paid for them, but I know it wasn’t $160 dollars. Fuel filters run about $45. I have 2 but I haven’t needed to change them yet.

So am I saving money? Yes. Is it a lot? No. Will you save money? Maybe.

Buy it for the smiles not the costs. At the end of the day if there was a hemi option and no diesel I would have happily paid extra for that and got even worse fuel mileage.

It doesn’t make sense to factor in maintenance costs as they’re all under warranty and you shouldn’t have to pay a dime for either. More so for the diesel since it comes with a 100k warranty. Inconvenience? Yes but so what. Gas engines aren’t immune to issues and my JK spent plenty of time in the shop as well for intake gaskets, head gaskets, transmission, and endless other things. It’s called life.

True but the diesel will be far less reliable than the gas

 

[@californiajeeping]

True but the diesel will be far less reliable than the gas

I would not say that at all. the pentastar since its inception has been PLAGUED with cylinder head and cam issues.

My 2020 sport S 3.6L had multiple random misfires from around 10k miles. Throw a soft CEL if you drove it hard then it goes away. Dealer wanted my own money to teardown to investigate. It also ticked at idle and ran rough at idle. This was my 3rd 3.6L jeep with issues like this.

Now more owners are chiming in on the same issues plus theres multiple class action suits regarding this engine.

I would argue we've reached a point where NO new vehicle is RELIABLE. Much less serviceable!

 

[JET_83]

I would not say that at all. the pentastar since its inception has been PLAGUED with cylinder head and cam issues.

My 2020 sport S 3.6L had multiple random misfires from around 10k miles. Throw a soft CEL if you drove it hard then it goes away. Dealer wanted my own money to teardown to investigate. It also ticked at idle and ran rough at idle. This was my 3rd 3.6L jeep with issues like this.

Now more owners are chiming in on the same issues plus theres multiple class action suits regarding this engine.

I would argue we've reached a point where NO new vehicle is RELIABLE. Much less serviceable!

There’s been far more reported problems with the diesel than the gas especially as of lately. Anything that has a turbo is prone to more problems than something naturally aspirated

 

[JET_83]

I would not say that at all. the pentastar since its inception has been PLAGUED with cylinder head and cam issues.

My 2020 sport S 3.6L had multiple random misfires from around 10k miles. Throw a soft CEL if you drove it hard then it goes away. Dealer wanted my own money to teardown to investigate. It also ticked at idle and ran rough at idle. This was my 3rd 3.6L jeep with issues like this.

Now more owners are chiming in on the same issues plus theres multiple class action suits regarding this engine.

I would argue we've reached a point where NO new vehicle is RELIABLE. Much less serviceable!

The engine isn’t identical since that happened

 

[@californiajeeping]

The engine isn’t identical since that happened

The new motors are having issues with the camshaft and lifters. Same issues the earlier 2014 models had.

 

[Almost]

I would not say that at all. the pentastar since its inception has been PLAGUED with cylinder head and cam issues.

My 2020 sport S 3.6L had multiple random misfires from around 10k miles. Throw a soft CEL if you drove it hard then it goes away. Dealer wanted my own money to teardown to investigate. It also ticked at idle and ran rough at idle. This was my 3rd 3.6L jeep with issues like this.

Now more owners are chiming in on the same issues plus theres multiple class action suits regarding this engine.

I would argue we've reached a point where NO new vehicle is RELIABLE. Much less serviceable!

You left out the best part, the plastic oil cooler that needs to be replaced every 40-60K miles due to it cracking.

There’s been far more reported problems with the diesel than the gas especially as of lately. Anything that has a turbo is prone to more problems than something naturally aspirated

The diesel poll in the diesel section says otherwise. Actual engine-related issues are about 1%, the other 4-5% are either emissions or fuel pump-related. I haven't seen anyone needing a turbo nor was that ever an issue on the Gen 2 motors. The gen 3 motors also seem to be far more relaible than the gen 2 motor as well.

I''ll report back in another 200K miles.

 

[JET_83]

You left out the best part, the plastic oil cooler that needs to be replaced every 40-60K miles due to it cracking.



The diesel poll in the diesel section says otherwise. Actual engine-related issues are about 1%, the other 4-5% are either emissions or fuel pump-related. I haven't seen anyone needing a turbo nor was that ever an issue on the Gen 2 motors. The gen 3 motors also seem to be far more relaible than the gen 2 motor as well.

I''ll report back in another 200K miles.

You’re gonna go by just one poll on here and consider that to be accurate across the board? That’s laughable

 

[Larry D]

There’s been far more reported problems with the diesel than the gas especially as of lately. Anything that has a turbo is prone to more problems than something naturally aspirated

There's poll in the diesel section that would prove this false.

 

[JET_83]

You left out the best part, the plastic oil cooler that needs to be replaced every 40-60K miles due to it cracking.



The diesel poll in the diesel section says otherwise. Actual engine-related issues are about 1%, the other 4-5% are either emissions or fuel pump-related. I haven't seen anyone needing a turbo nor was that ever an issue on the Gen 2 motors. The gen 3 motors also seem to be far more relaible than the gen 2 motor as well.

I''ll report back in another 200K miles.

The diesel has had camshaft issues as well as oil cooler failures and EGR failures

 

[JET_83]

There's poll in the diesel section that would prove this false.

That’s not the tale of the tape everywhere ???

 

[Larry D]

There's a poll in the diesel section that would prove this false.

 

[JET_83]

That’s just on this forum dude, that doesn’t mean shit because that’s just for people that are members of this group

 

[Larry D]

That’s not the tale of the tape everywhere ???

Well no were have I seen anyone on there 3rd motor by 15000 miles as with the 3.6. Bad cams lifters, heads. All kinds of problems. But yeah stick with them being reliable.

 

[Gvsukids]

???

You’re gonna go by just one poll on here and consider that to be accurate across the board? That’s laughable

Like your viewpoint of the Mojave?

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