Replacement types of fluids
#1
JK Enthusiast
Thread Starter
Replacement types of fluids
I'm trying to find out what type of fluid to put in my 2008 Sahara unlimited. I'm replacing the transfer fluid, differential front and back. Are there any synthetic oils I can sub for and do I really have to buy them from dealership.
#2
JK Junkie
Don't buy any fluids at the dealer. You can get them all at your local auto parts store. If you don't know what to buy, ask the counter clerk.
#4
JK Enthusiast
Thread Starter
#5
JK Enthusiast
Thread Starter
The deal said it uses a special type of fluid with an additive for the differential gear so can I use aftermarket and what type?
#6
IF you have a limited slip rear diff you will need friction modifier. Many synthetics come with that already in them, the bottle will say. I think they call for 75-90 weight gear oil. I used 80-90.. not a big deal with axles.
Transfer case just uses automatic trans fluid.
The only "special" fluid called for by Jeep is in the manual transmissions.
Transfer case just uses automatic trans fluid.
The only "special" fluid called for by Jeep is in the manual transmissions.
Last edited by EzK; 03-06-2013 at 03:05 PM.
#7
JK Enthusiast
Thread Starter
IF you have a limited slip rear diff you will need friction modifier. Many synthetics come with that already in them, the bottle will say. I think they call for 75-90 weight gear oil. I used 80-90.. not a big deal with axles.
Transfer case just uses automatic trans fluid.
The only "special" fluid called for by Jeep is in the manual transmissions.
Transfer case just uses automatic trans fluid.
The only "special" fluid called for by Jeep is in the manual transmissions.
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#8
JK Enthusiast
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80-90 Dino does require a modifier for the limited slip.
For how often you change tranny and gear oil I feel there is no reason to go cheap.
Last edited by Phrogmech46; 03-06-2013 at 03:51 PM.
#10
JK Enthusiast
Thread Starter
Will it it harm my differential if I added a thicker fluid like from 80-90 to 75- 140 I think that's it. I have 35's and a 4 inch lift. I go out off roading about twice a month. Sometimes I tow my two dirt bikes so if I changed would that make a difference or no.
Thanks.
Thanks.