B&j big boy?

what kind of lubricant is the best to run in a b&j big boy 2 speed trans/rev. and what are the amounts?

 

we run 3/4 of a quart of Dextron 3 in each unit, and 1/2 quart in the reverser. hope this helps

 

I recently had a conversation with Mike Strausburg @(B&J) 866-781-1064, He suggested light engine oil 10wt,20wt even 10wt30, 1 qt in the BJ units, 1/4 qt reverser.
Give Mike a call, always willing to assist.
Doug Cobeen

 

I run 5\ 20 wt. , in our Funny Car, a quart in each case and a half in the reverser. Knock on wood never had a trans. failure in 10 years of using B&J Transmissions, not to mention that Mike is a first class business man.
Eric Lourie