Engine Oil

[USAFREODRetired]

It's not the oil per se, it is the viscosity and a shite design from FCA on the valvetrain and it has been hit or miss as to who will have a 3.6L that has a valvetrain failure. One thing can be said without a doubt--you will not have issues by increasing viscosity. The 3.6L is NOT viscosity dependent and the ONLY reason that 0W-20 was specified was CAFE (aka maximum MPG).

If I had to start over with another Jeep (which is not going to happen), I would use xW-30 with a high cSt @ 100C rating OR a xW-40 from the first oil change--warranty bovine scatology aside.

High Performance Lubricants’ Premium Plus passenger car engine oil in 0W-40 looks very interesting to me...

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[CarbonSteel]

High Performance Lubricants’ Premium Plus passenger car engine oil in 0W-40 looks very interesting to me...

You would not need to go so "boutique" to get a great 0W-40 oil. Mobil, Castrol, or Pennzoil would serve you well as off the shelf 0W-40 oils.

 

[Odyssey USA]

Ran almost exclusively Amsoil at OEM specified 0W-20 since new with oil changes before I get to 5k, and this was my result at just over 55k miles. A lot of highway miles. A bit of towing in the mountains. Since I live at 7,000' MSL, the motor NEVER sees rated HP, even with a tune. Never ran hot, even towing.

I'm not blaming the oil, but I'm going up in grade due to what I perceive is an obvious design weakness that MIGHT be mitigated with some higher viscosity... YMMV.

Good on ya for trying. I do have to say that the high lift actuator wiped out the high lift lobe smooth and evenly. ha

As mentioned, poor valvetrain design. We shouldn’t even be concerned about oil this much but it’s Russian roulette apparently.

 

[Coreyb516]

Amsoil is what I have used for years, and no problems at all. Do your research and use what you decide is best. There are a lot of good oils out there. Also, there are many videos put out by the oil manufacturers just use your own decision making power as they all say their oil is best. I also use Amsoil in my differentials and currently have over 21,000 miles and getting ready to change it again. I do the oil change and differential fluid change at the same time. Not necessary I know, but it's fun.

I’m gonna go this route the small reputation is real good what weight do you use?

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