97 XJ, 4.0L, AX15, 2WD
I'm confused about gear oil for the rear differential. I have the 8.25 axle. The owner's manual says to use 75w/140 for towing applications and 75w/90 for normal applications. The FSM says for the 8.25 axle to use 80w/90 with no mention of higher weights. Is this is because models with this axle did not have tow packages available? Basically, what I need to know is if I am going to tow things, what weight should I use? I'm looking at Redline, because I'm ordering some MT90 for the tranny anyway.
This is a related question. I have a pop-up camper with the following specs:
Unloaded Vehicle Weight- 2300
GVWR- 3070
tongue weight- 350lb
Gross Axle Weight- 2720
It has brakes. From all the posts I've read, it appears I can tow more than the class 1 rating specified in the owner's manual for an XJ with an AX15. Can I tow this camper without putting too much strain on my transmission? I have the 3.07 differential gearing, as indicated by the tag on the housing.
My fiancee just bought this camper and has towed it with her Santa Fe, and now wants me to tow it with my beloved Jeep. I don't want to do anything to reduce its life expectancy.
I appreciate any responses.
sgt
I'm confused about gear oil for the rear differential. I have the 8.25 axle. The owner's manual says to use 75w/140 for towing applications and 75w/90 for normal applications. The FSM says for the 8.25 axle to use 80w/90 with no mention of higher weights. Is this is because models with this axle did not have tow packages available? Basically, what I need to know is if I am going to tow things, what weight should I use? I'm looking at Redline, because I'm ordering some MT90 for the tranny anyway.
This is a related question. I have a pop-up camper with the following specs:
Unloaded Vehicle Weight- 2300
GVWR- 3070
tongue weight- 350lb
Gross Axle Weight- 2720
It has brakes. From all the posts I've read, it appears I can tow more than the class 1 rating specified in the owner's manual for an XJ with an AX15. Can I tow this camper without putting too much strain on my transmission? I have the 3.07 differential gearing, as indicated by the tag on the housing.
My fiancee just bought this camper and has towed it with her Santa Fe, and now wants me to tow it with my beloved Jeep. I don't want to do anything to reduce its life expectancy.
I appreciate any responses.
sgt