I started this thread to put many threads together.. for discussing fluid types for diff, transftercase, transsmission auto/manual and amounts to use.
I find many people asking what type of fluid to use and how much in each of the drivetrain compnents.
It would be nice to have some expert feedback as to the amount and types of oil to use.
That way when a person cant remember they can refer back to this thread for the info.

Examples:


Engine oil is standard but maybe a good idea to mention what you use.. I am using 5W30 Mobile 1 Synthetic

Transfercase Uses ATF-4 as for how much it takes to do the job, i dont know? to bottles maybe? what brand do you use?

Transmission 6sp dont know what to use? or how much ..?

Automatic.. how much to use and what type

I use 75W90 Synthetic in my diffs as for the amount i should add i couldent tell you what the specs are.
not even the dealer could tell me, very frustrating
i think its 2L in the rear and 1L in the front?

let'er rip

 

Anyone know how much the front or rear diff's take? How much fluid? I put 1.75L in my front diff and have fluid coming out of the breather tube at times so it's to much... 5:13 gears with riddler diff covers dana 44's

 

Here are the factory differential capacities for the JK:

FRONT AXLE ± .03 L (1 oz.)
186 FBI (Model 30) 1.0 L (1.05 qts)
216 FBI (Model 44) 1.3 L (1.35 qts)

REAR AXLE ± .03 L (1 oz.)
198 RBI (Model 35) 1.83 L (1.9 qts)
226 RBI (Model 44) 2.25 L (2.4 qts)

Actual amounts from factory on my vehicle:
Front Dana 44: 44oz (15oz above bottom of fill hole) (1.4 qts)
Rear Dana 44: 72oz (slightly above bottom of fill hole) (2.25 qts)

 

Sweet!!! Thank you!!

I am also thinking that even though the riddler diff cover is larger so are the gears so it should balance out to the factory specs....

 

I tend to ignore the number, (it's an estimate, anyway) and just make sure it is filled to a level above the bottom of the axle tube. That's what it really needs, no matter what cover and gears it has.

 

That's also usefull info. Thank you

 

Is royal purple stncromax ok to use on the manual transmission ???

 

In the store now about to buy it and no one can give me an answer

 

I ended up buying pennziol synchromesh because it matched the mopar requirements royal purple syncromax gave no info.

Since there was a 1/2 price sale on royal purple products I got...

Royal purple ATF for the T- case
Royal purple 75w90 gear oil for the diff's
Pennzoil synchromesh for the transmission