jake brake rebuild

[jmadison]

i'am replacing the vacuum half of the pump and would like to know what oil you use to fill the other half of the pump. thanks in advance.

 

[CKelley1]

do yourself a big favor and junk the jake and install a bd. that is what we do and your problems are over. i used 75w-140 synthetic in the box.

 

[mroodzant]

I just did the same repair last week. I used some 30w oil???? not sure if it was right but it works.