I have a 1996 GMC K2500 4X4 7.4 litre 454CI with the 4L80E tranny, can I use Transynd in this tranny?
And is it tranny fluid in the transfer case and with the rear diff which is a posi from what I gather do I need to use an additive when I put in diff fluid?
And is it tranny fluid in the transfer case and with the rear diff which is a posi from what I gather do I need to use an additive when I put in diff fluid?