Bypass filter and cooler install.

[Glad_he_ate]

10% of pump volume is what cycles through the system. The only stock oil cooler is an oil to coolant heat exchanger, no way to add fans or anything to that loop. I believe this is a perfectly viable solution to the high oil temps as long as you can cool the returning oil significantly. Without my fans even coming on my temps didn’t climb as high today as they did when it was 20deg outside. Some fine tuning and this setup should easily pull 20deg off the towing temp. If nothing else it is reducing the demand on the main cooling system.

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[Glad_he_ate]

Also adds 2ish quarts of oil volume

 

[Glad_he_ate]

Non tow oil temps are down 13 degrees on my normal commute. If I trigger the fans on full it’ll drop a fair amount of heat I’m sure. More testing to come as spring and summer come on. Personally didn’t realize that in ny tow speed limits is 55… I have always just towed at posted limits. Might just take my foot out of it and tow at the legal towing speed to help with things… save heat and fuel, cost a small increase in drive time ??

 

[CrazyCooter]

Non tow oil temps are down 13 degrees on my normal commute. If I trigger the fans on full it’ll drop a fair amount of heat I’m sure. More testing to come as spring and summer come on. Personally didn’t realize that in ny tow speed limits is 55… I have always just towed at posted limits. Might just take my foot out of it and tow at the legal towing speed to help with things… save heat and fuel, cost a small increase in drive time ??

Are you saying oil temps are now less than coolant temps with your setup?

 

[Glad_he_ate]

Yes Today I saw 199 on oil and 201 on coolant. It was also 48 degrees out. So Obviously the efficiency of the cooler is based on ambient air temperature. Normally on regular highway drives even in -10 ambient air my truck will run 212 to 218 oil temp at 75mph granted I was driving 65 today for the most part so I am just posting up the data as I collect it. I can say that without a doubt the system is taking heat out of the oil and reducing strain on the over all cooling system. For all I know the oil to coolant system is actually warming the oil. And the temperature difference is simply due to calibration of the different sensors and or the location of the sensors in the respective systems. I’ll continue to monitor and report

 

[Glad_he_ate]

Also worth noting that I’m not being overly scientific with my data. Just posting my day to day experience with what I have. This time of year temperatures swing a lot here so it’s hard to get repeatable data.

 

[CrazyCooter]

Cool! Be interesting to see what it looks like as temps rise..

Wonder where the oil temp is being read?

 

[Glad_he_ate]

Pics on way home this evening

 

[@californiajeeping]

Pics on way home this evening

60 degree morning and oil temp is at 217 on mine. So this is an improvement.

 

[Glad_he_ate]

Any extra heat shedding is better then nothing right ??

 

[Hondo1]

Any updates on this?

 

[M390]

Pics on way home this evening

Any pics of off road pages with the Jeep at operating temp? Notice the trans temp is only in 80’s so I assume Jeep isn’t fully warmed up?

 

[Glad_he_ate]

Update: no leaks no issues. Still seeing cooler oil temps under normal conditions. Have a 1800 mile towing trip leaving on the 22nd of this month. Also no notable difference in oil pressure at a given speed or rpm.

 

[Glad_he_ate]

I don’t have any pics of off road pages with the trans hot. My trans takes a long time to get warm. It gets up to lockable temp aka 62degrees rather quick but soon as it hits 62 it slows way down on temp increase rate. Without towing I don’t generally see much over 120 on my normal commutes. It would take me well over 60 miles to get the temp to get to 140if it’s not hot out.

 

[Glad_he_ate]

Now that temps are warming up I decided to remove my jumper for the T stat. Hooked the stat back up being that I believe with the warming ambient temps The oil at the cooler should hit the 185 mark and kick on. Also I had an issue with the install. After deciding to go back to the t stat for control, I crawled under the front and noticed that one of the screws they used to mount the cross member to hold the cooler had no head on it! One half of the cooler was now unsupported!!! Glad I crawled under!!! So I removed the air dam drilled out the screws : they used a 3/8 self drilling screw: then bolted through it with a 1/4-20 with locks top and bottom. Then reapplied undercoat to the effected area. Then after seeing that I went over the whole system again. Found no other major issues however I did notice a small amount of oil seepage from the bottom of the insane diesel filter. Not much but enough to wet my finger. I do recall the installer telling me that he made a huge mess because the Allan head bolt was loose from factory. I gave the bolt a little bit of a snugging and dried what was on the rim of the cap. I don’t believe this to be a defect just a lack of attention to detail on the installer. I’ve been keeping my eye on the fill lv. Regularly and have not seen any drop in oil. One good thing is that I have 1800 miles on my oil and it’s damn clean ? looks like new. Filter must be removing most of the soot for sure. When I change my oil at the 7500 mark I’ll have roughly 2000 towing miles on it. I will send out for an uoa. I’m currently running penzoil platinum euro 5/40 with the proper spec on the bottle. If it comes back good at 7500 after 2k towing roughly 5800 lbs “I’m guessing” I will go back tk 10000 mile changes. I won’t go more then that regardless. I’ll know and post exact weights when I head out. Cat scale is 5 min from my house on way to the interstate.
I’m expecting to travel in the 55 to 60 mph range for two tanks of fuel then rest for the night on day one. Might make it three tanks depending on time and energy. This will be our longest trip with any trailer to date. We generally only camp in our home state, and honestly it’s been mostly within one to two hrs of home. We have road side on both the truck and trailer through insurance plus we have good Sam and AAA. I’ve done everything I can to prep the truck except drain and fill the diffs. I will probably do that this week for piece of mind. We head out on the 22. Not too long now!!

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