Stone_JKUR
New member
Every time my wheeling buddies and I go wheeling, someone ends up with "HOT OIL". What is this? How can it be fixed?
Adding a bigger aftermarket trans cooler.....Also if it doesn't require you to wheel in 4HI stick to 4Lo that helps a bit....
Do you mean stick to 4hi rather than 4lo. To move in 4lo your jeep stays at higher revs. 4hi is 1:1, 4lo in a sport is 2.xx:1 and 4lo in a Rubi is 4.1:1 so stay in 4hi as much as possible
4LO allows for higher RPM's and get more fluid flowing through the trans keeping it cooler. You can even try locking it out in 1st or 2nd gear in 2 or 4 HI. Lugging and constant shifting will cause the trans to generate more heat than can be dissipated. Just had this happen to me a week ago driving my 50k lb (auto trans) water tender the back way up to big bear. I noticed it was running a bit hotter than usual and just as I was about to down shift to 1st got the check trans message and it went into limp mode. Not good when responding to a fire..haha. 20 mins later I was back on the road.
I have had this happen in both 2wd and 4HI when driving on relatively easy mountain trails with somewhat steep hills every once in a while (no faster than 35mph). Its never once happened to me in 4LO. It is clearly noticeable that it is much easier to drive in 4LO rather than 2wd or 4HI because the engine seems to bog down on the steep parts when not in 4LO. Which makes the engine work harder and in turn get warmer.
Do you mean stick to 4hi rather than 4lo. To move in 4lo your jeep stays at higher revs. 4hi is 1:1, 4lo in a sport is 2.xx:1 and 4lo in a Rubi is 4.1:1 so stay in 4hi as much as possible
Don't do this.
Don't do this.
But I read it on the Internet. [emoji6]
Don't do this.
Do you mean stick to 4hi rather than 4lo. To move in 4lo your jeep stays at higher revs. 4hi is 1:1, 4lo in a sport is 2.xx:1 and 4lo in a Rubi is 4.1:1 so stay in 4hi as much as possible