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?
Hot Oil (JK)
- Thread starter Stone_JKUR
- Start date
Benito
Caught the Bug
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
aldaman
Member
Nope, 4Lo is preferable and most often doesn't make the hot oil come on....
aldaman
Member
martinzusmc
New member
I had the same issue (driving up Big Bear) I just installed a trans cooler W/fan on a temp sensor. Cost $150 and no more Hot Oil issues.
ttfhell
New member
Don't do this.
JAGS
Hooked
But I read it on the Internet. [emoji6]
Benito
Caught the Bug
The explanation quoted makes sense I hadn't thought about it that way. But no I didn't read it on the Internet, it just made a little bit more sense to me. I was mistaken.
Sharkey
Word Ninja
Yep...exactly the opposite of what you should do.
NFRs2000NYC
Caught the Bug
10 times out of 10 I've seen a hot oil light on the trail was because of lugging...meaning you're in 4hi when you should be in 4lo...the load on the transmission is much greater at 4hi....Ive seen it on JKs, Xterras, Toyotas, etc.
NFRs2000NYC
Caught the Bug
Wrong. Revs don't matter, load matters.
jeeeep
Hooked
or... if you have an automatic, 4Hi, (even with a trans cooler) and you have the 3.8 with the lousy tall OD, lock out OD and learn when to shift down if needed, just watch your rpms
If you have the 3.6 with tap shift, same thing...use it like a manual transmission, lugging will cause your trans to slip and heat up
automatic transmissions are good at figuring it out on the road but on the trail you have to take over. when going slow it will always choose OD or the tallest gear causing your trans to hunt for gears or slip until it decides to shift down = heat.
Take control of your automatic to keep the fluid moving and the momentum you need.
4Lo if you really need it, but going faster than recommended for 4Lo does more harm and still heats up, 4lo = more torque not more traction and is a lousy way to try and keep your rpms up (if that's why you're using it) shift down instead
If you have the 3.6 with tap shift, same thing...use it like a manual transmission, lugging will cause your trans to slip and heat up
automatic transmissions are good at figuring it out on the road but on the trail you have to take over. when going slow it will always choose OD or the tallest gear causing your trans to hunt for gears or slip until it decides to shift down = heat.
Take control of your automatic to keep the fluid moving and the momentum you need.
4Lo if you really need it, but going faster than recommended for 4Lo does more harm and still heats up, 4lo = more torque not more traction and is a lousy way to try and keep your rpms up (if that's why you're using it) shift down instead