X15 Oil Temp

[RByrd]

I have an X15, 565, 2050 tq engine with 4.30 rears. I’m typically grossing 175,000 lbs up to 250,000 lbs occasionally. I can’t seem to keep my oil temp at what I would consider “normal”. It regularly reaches 240 degrees and occasionally 245 degrees depending on the circumstances. Kenworth dealer that I purchased the truck from says it’s normal. Is this actually normal or is my concern valid? Truck only has 30,000 miles on it. I service every 10,000 miles with a syn blend. Is {after-garbage branded oil coolers} all it’s cracked up to be? Are there any other options to get the temp down? I’m worried about the upcoming summer heat.

[Rawze]

More info is needed...

What make/model truck, etc?.

Where are you hauling freight .. mountainous?.. all over?.. or regional etc. ?.

Your fuel mileage so far has been?

Is the engine de-mandated (deleted)?... and if so, who did it?. A very common symptom of bad de-mandate programming is higher than oil temps than expected for the application.

Does it have a boost and pyro gauges in it?... and if not, that is your very next investment for it. .. and if so, what are the numbers looking like?.


... AND NO.... !!!! An after-garbage branded oil cooler and/or alternate thermostat are NOT the solution!!!... if oil temps are running higher than normal... YOU DON'T GO COVERING IT UP WITH BAND-AIDS AND HIDING ANY POTENTIAL A REAL PROBLEMS!!!. Doing so is equivalent to finding coolant in your oil.. and instead of finding and solving the actual the issue.. you then try to run your oil thru an oil-water separator like a complete fool to cover up the fact that something might actually be wrong somewhere!.

[RByrd]

Kenworth W900L. We haul all over but mostly Southeast and Midwest areas. I get anywhere from 2 - 4 mpg loaded. Empty mpg just depends on how fast I want to run. With 4.30 rears, if I keep speed down around 60 mph, I can get around 6.5 mpg. However, even empty, I am still between 65,000 - 80,000 lbs empty depending on what trailer I have. Truck is new with no modifications. I have a boost gauge and I can monitor Exhaust Temp with the OTR tool I have. Exhaust temp fluctuates of course but I keep it under 900 degrees. Boost runs 31 psi at best.