I've looked around and searched but havent found an exact answer. I have a dana 44 rear and dana 30 front riddler covers that I'm going to be painting today and hopefully install within the next few days. Can someone please inform me as to what the correct ammount of fluid to put in each diff? Also i plan to use Royal Purple synthetic and was wondering what weight of oil to use.

Thanks for all the help,

Chuck

 

WayofLife's dif fluid change write-up

Here's a good place to start. The Riddler has higher fill hole, but that doesn't mean you need to put more oil in! People on here have said overfilling causes oil to come out the breathers and I believe them.

 

the same amount as the stock covers take.

 

As posted by Eracer76

CAPACITIES
Engine, with filter..........6.0 quarts
Cooling System, Initial Fill..........13.0 quarts
AMSOIL Antifreeze and Engine Coolant
Automatic Transmission, Initial Fill..........4.0 quarts[1]
Automatic Transmission, Total Fill
4 speed 42RLE..........8.8 quarts
Manual Transmission, NSG370..........3.2 pints
Differential, with 186 FBI Front..........2.1 pints
Differential, with 216 FBI Front..........2.7 pints
Differential, with 198 RBI Rear..........3.9 pints
Differential, with 226 RBI Rear..........4.7 pints
Transfer Case,NV241..........4.2 pints

If you have aftermarket diff covers with a higher fill hole to accommodate a rotated axle, and you fill it to the top of the hole, it will spew diff oil out the vent tube once you get it warmed up driving down the road

 

Awesome...thanks guys.

Chuck

 

UHM no not the same
Riddler dif cover has a different shape there by displacing the fluid differently actually make the stock fluid level low it take 1.75 quarts
thats 4 pints for the front
don't know for the rear as i don't have that cover

 

I have a 2008 JK Rubicon - Do I need any additive to the 75w90 synthetic gear oil?

 

no, the additive is for the LSD, which a rubicon does not have.

 

That's what I thought, but someone told me otherwise, and I wanted to reconform my understanding.

Thanks for your reply!