3.6 longevity solution

[IanNubbit]

They are almost identical except for the difference in displacement. Heads, timing cover, thermostat housing, water pumps etc. are interchangeable.

Interchangeable does not mean identical. The materials and tolerances throughout will be different. I'll use the hemi oil pump for example, 5.7 and 6.4 use the same pump, the hellcat pump is different, same pressure, higher volume. The pumps are interchangeable, but not identical. Also note, a 6.4, charger 6.2, and a 5.7 are near identical engines, but they also run different oil, why? Because different materials, tolerances etc.

Sponsored

 

[DanW]

Went by my dealer yesterday and spoke with the owner who owned every type of Wrangler He told me the problem with the lifters and cams comes down to two things. The oil required is too thin and letting your vehicle idle for extended long intervals. He stated that the oil shears down over time and the oil pump struggles to pump the thinned out oil and also struggles to maintain the required pressure which is needed to have everything lubricated. So his solution was to change the oil at 5,000 miles and bump it to 5w 30 and no prolonged idling. I wonder if the motor's that had issues on this site did any type of prolonged idling.

He's wrong. The oil is not the cause of that. Every Pentastar powered police vehicle would have the lifter failures if that were true.

5w30 won't hurt a thing. But neither will 0w20. (Assuming proper maintenance and oil changes for both)

I'm at 99,000 on my JL. All on 0w20. No failures of any kind. But I don't idle much. And I would not idle much even if I ran 5w50. There's nothing good that comes from it and it wastes gasoline. And it will degrade ANY oil, by causing fuel dilution. So I agree with the guy on that point.

 

[Jeep Junkie]

He's wrong. The oil is not the cause of that. Every Pentastar powered police vehicle would have the lifter failures if that were true.

5w30 won't hurt a thing. But neither will 0w20. (Assuming proper maintenance and oil changes for both)

I'm at 99,000 on my JL. All on 0w20. No failures of any kind. But I don't idle much. And I would not idle much even if I ran 5w50. There's nothing good that comes from it and it wastes gasoline. And it will degrade ANY oil, by causing fuel dilution. So I agree with the guy on that point.

So even at drive thrus we should turn the Jeep off?

 

[UncleJimmy]

He's wrong. The oil is not the cause of that. Every Pentastar powered police vehicle would have the lifter failures if that were true.

5w30 won't hurt a thing. But neither will 0w20. (Assuming proper maintenance and oil changes for both)

I'm at 99,000 on my JL. All on 0w20. No failures of any kind. But I don't idle much. And I would not idle much even if I ran 5w50. There's nothing good that comes from it and it wastes gasoline. And it will degrade ANY oil, by causing fuel dilution. So I agree with the guy on that point.

I have read maintenance teams for Charger police cruisers report with just that, massive valve train failures.

 

[UncleJimmy]

Interchangeable does not mean identical. The materials and tolerances throughout will be different. I'll use the hemi oil pump for example, 5.7 and 6.4 use the same pump, the hellcat pump is different, same pressure, higher volume. The pumps are interchangeable, but not identical. Also note, a 6.4, charger 6.2, and a 5.7 are near identical engines, but they also run different oil, why? Because different materials, tolerances etc.

I realize the hellcat pump is different, and that people are swapping those on the 5.7 to prevent ticking, but those oils spec differences are CAFE related and nothing else, with Stellantis sacrificing green credits with the Hellcat because they know they would never get away with a lower grade oil.

 

[DanW]

So even at drive thrus we should turn the Jeep off?

That's not really that long, but funny thing...I'm tempted to use ESS at a drive through.

I'm a bit extreme with it, but many times I'll park and go in just so as not to sit and idle.

It's not going to destroy your engine to idle a lot. But it isn't good for it, either. Look at how long cops idle. That's extreme. And I see cop Pentastars in Chargers and Durangos at a local used car dealer with 200k and up on them and they run fine. This is a tough engine. Those ex cop vehicles spent much of their lives idling.

Honestly, I'd worry more about frame and underbody rust more than wearing this engine out. But I like my engines to be at their best, so I don't like iding.

Sponsored