When should I change the differential and transfer case fluid in my MR it has just under 20k on it?

 

If it has never been changed now would be a good time.

 

follow the owners manual, btw search **Maintenance** u will come up w all the info u need.

 

ok ill change it now. How long is it between fluid changes?

 

READ!

 

change fluids right about before 30,000 miles.

 

+1

 

+2 unless you drive you car really hard.

 

Changed mine @ 13,900 because I bought the car with 10,000 miles on it. CHanged it again 10,000 later. Most of the guys I know change it evry 10,000 just because of all the bad press about the tc and trannys going bad. Knock on wood the regular maintence takes care of the problem before it starts.

 

+1. 10K miles for me, better to be safe than sorry.

 

10-15k

 

I would think 30K would be ok...we are not talking engine oil here (3,000 miles is a must) and you shouldn't be leaking any so just skip the 15K one.

Marc