This thread is in the 3.6L Pentastar subforum, so...
This...is one of the weirdest things i've ever heard. There is so little difference between 0W-20 and 5W-30 that the engine won't even know there's a change. You absolutely can mix the two...you can mix 0W-20 and 10W-40 with zero issue too. It would be FAR worse to drive low on oil than to top off with a slightly different weight.
Afaik, the recommended procedure for checking the oil is the same between 3.6L and 2.0T engines. Get it hot, shut it down, wait 5 minutes and then check the level.
Yes, the shop that did the rebuild filled it at that time. I checked it about 500 miles post rebuild and it looked fine. I checked again about 2,000 miles post rebuild and it looked fine - but in hindsight now it was reading slightly low but not enough for me to even think about it. Now, at about 4,000 miles (and foolishly well into a road trip) I checked again an got concerned.As typed, the quoted posts suggest that the 0W-20 in the engine now was added by the person/shop who performed the rebuild work. Is it possible that they underfilled the engine, and/or you didn't check the level before just now doing so during your current road trip?
I honestly don't intend to sound accusatory here. Just trying to fill in a few blank spaces.
This hits home - I've been in that exact spot with the stick dry as a bone. And that's the day I learned about the 5 minute rule. lolThink it has something to do with the 2-stage oil pump in both. Usually cold and hot are the same for mine, but one time I freaked out when the stick was completely dry. Did the thing, and it was perfect
Personally, I did not know that driving a quart low is worse than mixing two oils. That anecdotal wisdom had so far eluded me. Hence my earlier comment referencing somewhat incorrect anecdotal wisdom I had picked up over the years (though that is largely based on high-performance engines and not on Jeep workhorse engines. Mixing two oils can be done in a pickle but necessitating an immediate full oil change once out of the pickle. At least that’s what BMW M and Porsche specify. Ok maybe not so anecdotal then. Also does 20% sound like a lot of mixing?!)
Dude the oil debate is absolutely insane but has raged for decades. It's an utterly stupid subject for us to be so passionate about. The difference between 0w-20 and even 10w-50 is so minimal - any of those grades will allow either engine to perform as well as it was designed by FCA (which is to say - mediocre). With 0w-20 there will be a fraction of a percent improvement in flow, and with 5w-30 there will be a fraction of a percent improvement in how long protection lasts without pressure. That's it.
I think we should be more worried about engine component design and metallurgy. But we can’t control that so we obsess over peripheral things we think we can control. I want to believe that my 3k mile oil and air filter changes are going to save the day…but probably not.
this is often a sign of your oil filter cooler housing leaking...when they did the rebuild hopefully they either replaced it or used the proper orings.....easy to check just take a flashlight and look down at the base of the oil filter housing and see if oil is pooling there...it is common.....
Yes that's our nature - we like to think that what we call "science" makes us Gods of our own world, but we are still limited by our little brains and our seemingly infinite universe is scary. So many things we can't control. So we put those out of our mind by focusing on minutiae that we can control but doesn't matter.
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