3.6 longevity solution

[Jeep Junkie]

This one is another beauty

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[jbcrane]

...Anyway, isn't this like the 4th thread this month starting the same oil argument?

I love these oil threads. Seriously. I read every post (that's not ignored).
What's wrong with me?

 

[Jeep Junkie]

I love these oil threads. Seriously. I read every post (that's not ignored).
What's wrong with me?

Wimps put posters on the ignored list.

 

[UncleJimmy]

Because items are interchangeable does not make it the SAME engine. The twin turbo 2018 and newer Maserati engines require 10W-60 per the owners manual.

They are clearly the same engine with a few changes. Maserati made a deal with Fiat at the time.

 

[Tncdrew]

They are clearly the same engine with a few changes. Maserati made a deal with Fiat at the time.

Yep, that YouTuber "I do cars" (forget his name) that does engine teardowns, showed in one of his videos, that a number of parts in those two engines are interchangeable.

 

[Flip]

A friend of mine told me he now changes the oil in his vehicles every 3000 miles, with full synthetic oil. Is it overkill? Idk. I'm averaging a little over 4000 miles per change but every 3000 crossed my mine.

 

[UncleJimmy]

A friend of mine told me he now changes the oil in his vehicles every 3000 miles, with full synthetic oil. Is it overkill? Idk. I'm averaging a little over 4000 miles per change but every 3000 crossed my mine.

https://www.jlwranglerforums.com/fo...fore-its-too-late.124368/page-67#post-2948480

If it was me and I was taking long, extended trips I might do 4000 mi OC, however since I take many short trips with frequent cold starts, idling at stop lights, and in winter my engine oil never gets hot enough to boil off fuel and moisture so under those conditions of severe duty I choose a 2500 mi OCI with filter every other. I do that every three months for four per year with average cost of OC $35/$140 total.

 

[TrailScooter]

Amsoil. Around here the answer is always Amsoil.

Royal Purple always made me feel so special...

 

[Pig-Pen]

Ahh, say it ain't so. A police cruiser with a V6? I'm surprised the PDs even bought something without a V8. No wonder the criminals aren't scared.

You’d think every cop car has a 6.2 hemi in it thanks to Hollywood lol @SadRobot

 

[SadRobot]

You’d think every cop car has a 6.2 hemi in it thanks to Hollywood lol @SadRobot

I see I’ve been summoned. What did I do this time?

 

[jbcrane]

... but I do let it idle till the oil is at or over 100 degrees.

I too have noticed a difference in the sound the engine makes when accelerating over 2k RPM before oil (0W20 Mobil 1 EP) temp hits around 100f. There's a mild, rev-dependent 'clatter' around 2k rpm. Once oil temp is 100f or up the sound goes away; silent and smooth, purring like a kitten. I wonder if this would change-better or worse-running 5W30.?

edit: I should add I'm at 42K miles and have changed the oil every 3k-4k miles, always 0W20.

 

[Spank]

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.

You're damned if you do, damned if you don't.

I've taken meticulous care of my Pentastar and my rocker arms and cams still ate shit. And I have no illusions the replacements won't do the same, either.

 

[IanNubbit]

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.

So why was this issue in pre-2013 3.6s which ran 5w30?
It's not the oil used and I HIGHLY recommend not thinking you know more then engineers. with VVL especially, you don't want to mess with fluid weight, your going to be messing with oil pressure and likely over-do. If you have ~30psi at idle, and ~60psi over 3k, everything is fine. The more likely culprit of failure is simple, every vehicle with roller bearing valve train components, have roller bearing failures. Great example is when Cummins switched. Now they have the same issues. What everyone needs to do as owners is use the proper oil, only ones that pass ALL MS standards needed, along with doing your oil changes roughly every 5k miles, not 10k

 

[Jeep Junkie]

So why was this issue in pre-2013 3.6s which ran 5w30?
It's not the oil used and I HIGHLY recommend not thinking you know more then engineers. with VVL especially, you don't want to mess with fluid weight, your going to be messing with oil pressure and likely over-do. If you have ~30psi at idle, and ~60psi over 3k, everything is fine. The more likely culprit of failure is simple, every vehicle with roller bearing valve train components, have roller bearing failures. Great example is when Cummins switched. Now they have the same issues. What everyone needs to do as owners is use the proper oil, only ones that pass ALL MS standards needed, along with doing your oil changes roughly every 5k miles, not 10k

I have 30 psi at idle and 82 psi when I floor it. I am running HPL Super Car 0w30 that is a totally different chemistry than Chrysler MS-6395 and has truckloads of zinc and 12 viscosity at 100 degrees, compared to the measly 8 viscosity of PUP 0w20 that becomes freakin 0w16 after 2000 miles. No thank you, no 0w20 for me.

 

[Jeep Junkie]

Chrysler spec is not some Buggati spec, any oil can exceed it.

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