2014 GC summit 5.7 Hemi high oil temp - Jeep Garage - Jeep Forum

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Old 08-13-2016, 09:25 PM
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2014 GC summit 5.7 Hemi high oil temp

Just got done with a 600 mile road trip with my 2014 summit GC 4x4 5.7 hemi. Trip had large mountains with some long steep mountain grades that I was running at around 65 mph. The hemi seemed to effortlessly go right up the mountains no struggling or high reving just went right up. I was watching engine temp, trans temp and oil temp on these steep climbs. Engine temp and trans temp never moved and just stayed normal the whole time but the oil temp climbed up to 244F degrees on the steeper grades, normally it seems to sit around 212. Though not terrible 244 is starting to get up there, especially for not towing or hauling a load just me and 1 passenger It was a hot humid 95 degree day and ac cranked of course. So is that oil temp normal/ok for working it on a mountain? But what I really wonder is where would that oil temp number be in the same conditions if I were towing 7200lbs? I do always use a full synthetic oil so that should help protect a bit.

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Old 08-13-2016, 09:32 PM
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Re: 2014 GC summit 5.7 Hemi high oil temp

I've seen that and higher towing in stop and go traffic which is harder on a motor. Premium synthetic oils don't start to lose their properties until about 350*f+ so that's not a concern. However, I have never seen over 230*f in the mountains of west Virginia without a load.
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Old 08-13-2016, 09:50 PM
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Originally Posted by The Evil Twin View Post
I've seen that and higher towing in stop and go traffic which is harder on a motor. Premium synthetic oils don't start to lose their properties until about 350*f+ so that's not a concern. However, I have never seen over 230*f in the mountains of west Virginia without a load.
Thanks yeah that's what I thought it's not excessively high but just seemed a little high for no load. They were some nasty steep grades and it was 95+ high humidity so maybe I'll just chalk it up to that.
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Old 08-14-2016, 09:36 PM
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What would be an acceptable sustained max oil operating temperature?
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Old 08-31-2016, 07:32 PM
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Re: 2014 GC summit 5.7 Hemi high oil temp

I wouldn't worry unless you start seeing sustained oil temps over 260-270. And I do mean sustained.

I put the oil cooler for the Durango 5.7 special service package on my GC (it fits fine) and it dropped my oil temps around 10 degrees in general, as an FYI. It also doesn't seem to climb as much when under load...max temp I've seen since the installation is about 221F.
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Old 08-31-2016, 08:00 PM
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Originally Posted by Peter_K View Post
I wouldn't worry unless you start seeing sustained oil temps over 260-270. And I do mean sustained.

I put the oil cooler for the Durango 5.7 special service package on my GC (it fits fine) and it dropped my oil temps around 10 degrees in general, as an FYI. It also doesn't seem to climb as much when under load...max temp I've seen since the installation is about 221F.
Is it a hard install or just a quick bolt on?
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Old 08-31-2016, 09:34 PM
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Re: 2014 GC summit 5.7 Hemi high oil temp

Quote:
Originally Posted by silvermax04 View Post
Is it a hard install or just a quick bolt on?

It's a bit involved. The oil cooler itself is a sandwich type that attaches to the oil filter housing. However, it needs a different water pump with an outlet for a hose which attaches to the oil cooler, and a different lower radiator hose (also with an outlet for the oil cooler). All of the parts are available readily, but it's not cheap to do it. The water pump is the most expensive part.
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Old 08-31-2016, 09:59 PM
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Quote:
Originally Posted by Peter_K View Post

It's a bit involved. The oil cooler itself is a sandwich type that attaches to the oil filter housing. However, it needs a different water pump with an outlet for a hose which attaches to the oil cooler, and a different lower radiator hose (also with an outlet for the oil cooler). All of the parts are available readily, but it's not cheap to do it. The water pump is the most expensive part.
Hmm yeah changing out the water pump not something i want to tackle right now, wonder why they didnt include it on the GC 5.7 with tow package.

Im not as concerned about it now but where is the 244F with no load going to be when i start towing 7000lbs on same mountains, probably somewhere i dont wang it to be i bet. 244 though not terrible just seemed to be getting up there for no load and empty vehicle.
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