Trans with deep pan

[Dick]

How many quarts of Trysan to do a complete fluid change with the deep pan?

[dmaxalliTech]

I would plan on using 4 gallons

[hoot]

Read through this stuff. It's a little unorganized but has a lot of info..

web page (http://onramp.uscom.com/%7Ehoot/cars/duramax/gmc/allison/allisonflush.htm)