My transfer case on my 02 F-150 FX4 is coming due for a fluid change soon. Should I add some(how much?) AutoRx in and run it 2-3000 miles then change it? I am going to switch to Amsoil synthetic AT fluid after I drain it.
2 oz should be about right. You may want to look at the instructions page on the main site. I think it's about 1 oz per qt. It's doubtful your unit holds much more than 2 qts. Then run it about 1000 miles.
