Transmision Fluid
 

whats the general consensus on the weight of fluid to use? will be getting amsoil.

5W-30

Assuming you mean for the Getrag, Amsoil's offering would be:

http://www.amsoil.com/products/images/thumbs/mtf.jpg

yes for the getrag.
and how many quarts will i need so i can overfill it by 1 qt.?

The G360 is spec'd to hold 3.5, so get 5, put 4.5 in and save a half quart for top-up later in case you need it.

alright thanks. id go get the manual outta my truck but uh im still tryin to see straight from last night ha ha.

According to the amsoil lookup, you need 5W-30 motor oil and not the syncromech tranny fluid.

syncromesh came out after the getrag was put in our trucks, it is much better for the syncros, i would recommend it

can it be mixed with the 5-30 like an additive?

That's because the amsoil lookup is not smart enough to understand the manufacturer's specification written 20 years ago has been superceded by contemprary lubrication technology, as alluded to above.

As an Amsoil rep and site sponsor you should be aware of these issues and be giving appropriate advice to the members here, Heath.

Bad idea. Just use the synchromesh.