Thoughts on 3.6 longevity

[Deleted member 57375]

Not until you answer why you made this post: https://www.jlwranglerforums.com/fo...es-this-tire-has-to-be-on-20-inch-rim.136218/

If this doesn't relate to you. Keep your thoughts to yourself.

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[AlgUSF]

I was reading about the issues with metal inside the 3.6 . I have a 2018 jl unlimited with the 3.6. I would like to know the mileage of the first oil change and all after that,also was the engine broken in properly. I would like to hear feedback from the people who have had this issue with their 3.6

Always change every 3K with AMSOIL.

 

[Remorseless]

Always change every 3K with AMSOIL.

Every 3000 ft it is!

 

[yokramer]

Always change every 3K with AMSOIL.

Shit you can push that to 30k if you are using Amsoil

 

[TheRaven]

But where do you stand on the ridiculous requirement that 35x12.50R20 tires only be installed on 20" wheels?

That IS ridiculous. We should be able to install the tires that WE BOUGHT with our own money on whatever size wheels we want.

 

[Remorseless]

That IS ridiculous. We should be able to install the tires that WE BOUGHT with our own money on whatever size wheels we want.

I knew you could be reasonable, Kevin

 

[Deleted member 57375]

Shit you can push that to 30k if you are using Amsoil

That explains the problem with metal in engine. 30k oil changes lol

 

[Ratbert]

If this doesn't relate to you. Keep your thoughts to yourself.

@azwjowner made an extremely valid point, yet you seem to be attempting to silence him. Hopefully you know that strategy rarely ends well here.

 

[Remorseless]

That explains the problem with metal in engine. 30k oil changes lol

The metal typically stems from a failed bearing on the rollers. So the metal in the engine is a symptom, generally, not a cause.

 

[Deleted member 57375]

The metal typically stems from a failed bearing on the rollers. So the metal in the engine is a symptom, generally, not a cause.

So if the failure is rocker roller bearings. Why isn't all 3.6 affected?

 

[TheRaven]

So if the failure is rocker roller bearings. Why isn't all 3.6 affected?

What makes you think they aren't all affected? Just because some haven't experienced the failure yet?

 

[Remorseless]

So if the failure is rocker roller bearings. Why isn't all 3.6 affected?

The running theory is that the bearings fail because of oiling issues. Lots of variables that go into whether a particular engine would encounter that oiling issue. All 3.6s may be susceptible, but that doesn't mean you're going to encounter said issue you're susceptible to.

 

[Deleted member 57375]

What makes you think they aren't all affected? Just because some haven't experienced the failure yet?

Because it happens at a wide range of miles.

 

[Nitehawk92]

If this doesn't relate to you. Keep your thoughts to yourself.

That's never going to happen in this forum. If you have thin skin and are easily offended, you will have a problem here...

 

[TheRaven]

Because it happens at a wide range of miles.

So then you DON'T believe they aren't all affected? Your wording is confusing.

It does happen at a wide range of miles, and for that reason no one can say at this point that they aren't all affected. Much like the DoD lifters on the Hemi and SBC V8s for example - the old single mode systems would generally fail in the 130-150k range. Some would fail sooner, some would last longer...but it's generally accepted that they all WILL fail, it's just a matter of when. Our JLs are relatively young, the vast majority of us haven't hit 100k miles yet...so there's still a lot of time left before we will know the full extent of this.

That said, the problem is a design issue. The only way to fix it is to fix the design. Different weight oil isn't going to fix it, different oil change intervals isn't going to fix it. If you want to keep your JL for the long haul, get a warranty.

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