A couple of questions

[extranjeo]

What is the additive of choice for the posi?

Where would the light bulb be in the trunk if so equipped? I am working on an 86 GN. Thanks in advance.

 

[1fastcobra]

the best is the ford posi additive from the dealer

 

[earlbrown]

Run it without additive first and make sure you actually need it.

 

[Tom87GNX]

My GN posi has 60K on it, I add the GM friction modifier every time I change the diff oil, it has noticeable clutch chatter around turns without it. Add a bottle of the modifier and presto- problem solved.

 

[extranjeo]

Any insight on the trunk bulb?