Differential/transfer case

[Pupp]

Got a 2000 Denali I plan to change the oil in the diffs and transfer case. Always had pre 70 cars in the past and would flush it with gas or turpintine with out problems. What should I use in these new fangled vehicles? TIA for helping an old guy out.

 

[swathdiver]

Got a 2000 Denali I plan to change the oil in the diffs and transfer case. Always had pre 70 cars in the past and would flush it with gas or turpintine with out problems. What should I use in these new fangled vehicles? TIA for helping an old guy out.

Unless they were gunked up, I would just change the fluid.

 

[OR VietVet]

I used Brake Kleen when I would spray them out because it dissolves so fast. I have also seen carb cleaner used.

 

[Bill 1960]

Brake cleaner for diffs. And don’t put anything in the transfer case except the correct fluid.