X15 questions

[Explosia]

(09-17-2020 )Papa_Buck Wrote:  I have 3 X15 2350 motors set at 600 hp, all in Kenworth W900's from 2017 - 2019's. We also pull the Baker grade in the mohave desert, and the I-17 out of phoenix, and have noticed the heat in the oil and water pulling these grades. We didn't let the oil get into the red, but there were times it got like your pic. That was when we were driving the truck like the service people at Cummins told us to.

After coming here and getting educated, I have my drivers running the motors between 15 and 2000 rpm and the oil and water temps have come down. Keeping the RPM up and shifting down has made a difference in the temps. We have the oil temp guages in the dash, and on the Pacar trucks (Kenworth and Pete) you can have the computer display a computer generated guage from the dash display (If you have that option)

I also noticed a drop in the temp again when I installed the bypass filters and added another gallon of oil to the system.

Just my experience.

I have been a student of rawzes for a few years now, and have driven my trucks like he teaches. The temps that I posted are pulling grades at 20 lbs or less. I do let it pull down to 1450 or so, but I feel it isn’t detrimental to the engine as I’m using 10-20 lbs of boost. I haven’t put in a bypass because like I posted before I’m gonna visit Georgia soon. But it is reassuring that other X15’s are preforming the same and mine is not an anomaly. Still not happy with the high oil temps, like rawze says that leads to higher friction and engine wear.