5.7 hemi oil cooler 4893309AA

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kossuth

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See this kit out there for the 5.7s. How well does this work? I would think it would keep the oil temp close to the coolant temp which I’m good with.
 

Wild one

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See this kit out there for the 5.7s. How well does this work? I would think it would keep the oil temp close to the coolant temp which I’m good with.
Save your money,it's more like a small oil heater,it's to small with not anywhere enough plate surface area to function as anything you'd call an oil cooler. All you're doing is adding more leak points for something that doesn't really do the job you'd like it to do,plus it restricts the size of filter you can use.You'd have a bigger benefit by running a remote oil filter set-up.
 

crazykid1994

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Besides the effort of swapping out all the coolant lines to make that work… there’s really very minimal benefit. It warms the oil up slightly faster due to engine coolant. Otherwise when I removed the “oil cooler” from my truck my oil temp actually went down. Usually sat around 203-205°f with my 190° thermostat. Now my oil sits around 190-194°f. I think I made it to 205° pulling my fathers boat doing 55-60 mph
 

crash68

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It warms the oil up slightly faster due to engine coolant. Otherwise when I removed the “oil cooler” from my truck my oil temp actually went down. Usually sat around 203-205°f with my 190° thermostat. Now my oil sits around 190-194°f.
If someone doesn't work their truck much the OEM oil heat exchanger is probably better for the oil as it gets warmer faster. In reality unless someone is working the snot out of the truck pushing 250°F oil temps regularly an auxiliary cooler isn't needed. A good full synthetic oil will handle the elevated temps.
 

crazykid1994

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If someone doesn't work their truck much the OEM oil heat exchanger is probably better for the oil as it gets warmer faster. In reality unless someone is working the snot out of the truck pushing 250°F oil temps regularly an auxiliary cooler isn't needed. A good full synthetic oil will handle the elevated temps.
Adding the oem oil cooler it if it wasn’t already there though? I think these trucks did fine for years without having an oil cooler on them. Also that tiny oil cooler is very negligible and caused 2 to 3 psi reduction in oil pressure on my truck. Maybe if it was something larger like they have on the diesel trucks would be a better idea. All I run is a filter relocation with a larger filter.
 
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Wild one

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If someone doesn't work their truck much the OEM oil heat exchanger is probably better for the oil as it gets warmer faster. In reality unless someone is working the snot out of the truck pushing 250°F oil temps regularly an auxiliary cooler isn't needed. A good full synthetic oil will handle the elevated temps.
Even with dual remote filters,my truck will still run oil temps between 190 and 195 just touring around,not working the truck,and pushing it hard they'll get to 195/198,which i'm alot more comfortable with compared to oil temps of 210+.
I don't really subscribe to the theory of oil temps above 210,as the hotter the oil temp,the thinner the film strength,and cushion factor,especially when it comes to keeping the cam and lifters happy.
They keep raising the temps and thinning out the oil,everytime they go after corporate milege numbers,and i'm not so sure that benefits longevity as much as it's done to keep the gubermint nannies happy.
It's my understanding they removed this note from the bigger paper manuals in the earlier trucks,because the trucks apparently wouldn't meet their advertized milege numbers,and the goverment came down on them for it.Up till either 16 or 17,they did say you could run 5W-30 in the 5.7's,then they were forced to remove that note from the manual.
 

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kossuth

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Not sure how some of you are claiming 190 engine oil temperatures. I just got done with a 2000 mile trip to TX with an open car trailer and a 68 Corvette. The whole setup was slightly over 12,000 lbs, validated via certified scale. On some of the mountain passes coming out here (Appalachian/Smokey mountain pass) I saw engine oil temps up around 240. Also saw it climb up there on the mountain passes headed toward El Paso on I10. Elevation is close to if not exceeding 4000 ft here. Consistently sat around 220-225 on the flat but shot up on the grades. While 240 isn’t alarming it’s higher than it should be.
 
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crazykid1994

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If you are towing 12,000lbs hopefully that’s behind a 2500. If so I would look into a thermal remote oil filter mount and oil cooler to help keep oil temps down. My truck is a 2017 1500 with the 5.7 and 8 speed. Towed 9,300lbs. However, I do have the newer engine and transmission setup which is a lot more efficient than your truck
 
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kossuth

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If you are towing 12,000lbs hopefully that’s behind a 2500. If so I would look into a thermal remote oil filter mount and oil cooler to help keep oil temps down. My truck is a 2017 1500 with the 5.7 and 8 speed. Towed 9,300lbs. However, I do have the newer engine and transmission setup which is a lot more efficient than your truck
I think you misread. The whole setup (truck, trailer, car) was 12,000 plus.
 
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