Pentastar lasts over 600k miles with no issues?

[PyrPatriot]

Hope so because it looks like I will drive 35k miles a year and in 10 years be at about half that

https://www.thedrive.com/news/34672...s-chrysler-pentastar-v6-is-after-626000-miles

Got me thinking of a thread I came across a while back

https://www.wranglerforum.com/threads/who-has-high-mileage-with-pentastar.304913/page-12

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[takeitsleazy]

The 3.6 in my JK was perfect. I only had 60k (in 7 years) on it before selling, but I was meticulous with the maintenance. I’m very happy with the engine overall, it’s why I didn’t hesitate snapping up a gladiator.

My wife’s 3.8 is burning oil and it’s a nightmare trying to research a cause- apparently everything is suspect. We’ll be moving in the next couple years, and I’ve convinced her to sell it before that time. Thank god.

 

[PyrPatriot]

The 3.6 in my JK was perfect. I only had 60k (in 7 years) on it before selling, but I was meticulous with the maintenance. I’m very happy with the engine overall, it’s why I didn’t hesitate snapping up a gladiator.

My wife’s 3.8 is burning oil and it’s a nightmare trying to research a cause- apparently everything is suspect. We’ll be moving in the next couple years, and I’ve convinced her to sell it before that time. Thank god.

Please elaborate on being meticulous with maintenance, for those who may not know anything about maintaining an engine beyond oil changes or who have their own views what that means

 

[takeitsleazy]

Please elaborate on being meticulous with maintenance, for those who may not know anything about maintaining an engine beyond oil changes or who have their own views what that means

Nothing extraordinary, to be frank. Following the service schedule. Keeping the engine bay clean, extra fluid and filter checks after fording water, and most important for me, 5 tire rotations. I do periodic sea foam treatments to the oil, gas, and manifold as well. I’m a carpenter, not a mechanic, so all the simple stuff that can be taken care of with a basic set of tools is well worth the time invested imo. I’m probably forgetting things, and probably not doing as much as I could. But that’s why I frequent forums like this- It taught me everything I know about working on vehicles

 

[LostWoods]

Please elaborate on being meticulous with maintenance, for those who may not know anything about maintaining an engine beyond oil changes or who have their own views what that means

Having torn down or swapped several extremely clean 200k+ engines when I wrenched, it never failed it was some old dude who bought it new and it was always the same story: quality gas, quality oil, and extremely diligent oil changes using the "severe duty" maintenance schedule.

 

[PyrPatriot]

Having torn down or swapped several extremely clean 200k+ engines when I wrenched, it never failed it was some old dude who bought it new and it was always the same story: quality gas, quality oil, and extremely diligent oil changes using the "severe duty" maintenance schedule.

quality gas?

 

[LostWoods]

quality gas?

Higher quality gas includes detergents and the like that reduce carbon build-up and keep valves and the passageways in the heads cleaner. Chevron's Techron or Shell V-Power are examples but they're generally all the same.

This is sort of a bullshit certification companies have to pay for but all these companies listed have these kinds of detergents in their gas:

https://toptiergas.com/licensed-brands/

Personally I always used Chevron when I lived back west but typically go with Shell here. Sunoco is good too but they just decided to make the call to not recertify. Their gas still has the same detergents.

 

[takeitsleazy]

Having torn down or swapped several extremely clean 200k+ engines when I wrenched, it never failed it was some old dude who bought it new and it was always the same story: quality gas, quality oil, and extremely diligent oil changes using the "severe duty" maintenance schedule.

What would you consider quality oil? Thank you for the link, by the way. Very useful

 

[DirkG]

What would you consider quality oil? Thank you for the link, by the way. Very useful

I'll let LostWoods offer his own opinion, but from someone who has changed his own oil for 20 years, I swear by Mobil 1 Synthetic. I just sold my 2006 Acura MDX that had 210K miles and was still going strong. I change my Mobil 1 about every 5,500 miles.

 

[LostWoods]

Yeah Mobile 1 is pretty good. For trucks I tend to go with Rotella personally.

 

[AggieJeep]

I have 105k on my ‘12 JK 3.6. That isn’t a lot but it runs much smoother than my JT with 5k on it. I recently took a long trip with a buddy and he was always commenting that when we stopped, he could not tell it was running except by looking at the tach. Makes me think this thing will last a good long time.

I follow the maintenance schedule and use Royal Purple syntheti in the engine and axles. I like to support those guys because they are kinda local to me but I figure any good synthetic will do fine.

like others, I use ‘good gas’ as much as possible. I Dodge getting fuel at the old sites with old tanks and rock bottom gas. Gas is like whiskey, the cheap stuff will get you there but there is a difference. I also do an occasional dose of sea foam or Luca.

 

[takeitsleazy]

I use royal purple, but only because it was the only full synthetic available on base in England when I got my jk. I liked it and stuck with it since.

 

[Buckweet]

My 2020 Gladiator Mojave came with the inline 6 Turbo 308hhp

 

[02sahara]

I’ve got a 2011 Grand Cherokee with the 3.6. I bought it at 123k a hear and a half ago and I’m up to 158k now. I think the water pump and thermostat have been replaced by the original owners. I’ve changed the oil when the light comes on with good quality oil and have no problems. I’m hoping I can replace it with the sarge JT when it comes out this year.

 

[mazeppa]

What oil did they use: 5w-30, 5w-20, or 0w-20?

Edit: at 600K miles, probably not in the time frame to use 0w-20.

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