zippy Posted August 26, 2005 Report Share Posted August 26, 2005 the autotrak fluid is very nice and by design works very well in transfercases and probably automatic transmissions. i plan to test it someday on an 65E. as for making the awd work better using it, maybe with lower fluid temperatures, but the viscous coupler shouldn't be sharing fluid with the rest of the transfer case. the viscous coupler is a sealed unit. Link to comment Share on other sites More sharing options...
Bowtie70SS Posted September 2, 2005 Report Share Posted September 2, 2005 I know I jumped in kinda late on this, but I have a question. It seems like trying to save the gasket is a waste to me. I have always taken the cover off and used brake parts cleaner to try and get out as much debris as possible. I'm just wondering if it is neccesary to douche out the rear end. This may also be a dumb question but is the rear axle 9.5 or 8.5? Thanks Dave Link to comment Share on other sites More sharing options...
misterp Posted September 2, 2005 Author Report Share Posted September 2, 2005 I know I jumped in kinda late on this, but I have a question. It seems like trying to save the gasket is a waste to me. I have always taken the cover off and used brake parts cleaner to try and get out as much debris as possible. I'm just wondering if it is neccesary to douche out the rear end. This may also be a dumb question but is the rear axle 9.5 or 8.5? Thanks Dave The G80 rear axle is also know as the GM 8.6. And I am not one to argue cleanliness, but have had no problems just changing fluids at appropriate intervals in my other vehicles. Mr. P. Link to comment Share on other sites More sharing options...
Bowtie70SS Posted September 4, 2005 Report Share Posted September 4, 2005 Ok so you've decide to pull the rear diff cover and clean it out. If you want a new gasket you'll need Felpro pn# RDS55028 . At Advance our computer only lists a 9.5 ring gear. So I went back a couple of years and looked one up for a 98 Silverado with a 8.5 inch ring gear. MisterP informed me that it is really a 8.6 but the 8.5 gasket works great. BTW the gasket costs like $3.49 . Later Dave Link to comment Share on other sites More sharing options...
yeary03SS Posted September 12, 2005 Report Share Posted September 12, 2005 I've already noticed a difference on launches, the rear-end feels a bit more squirley than before, I don't know if that is good or bad. I can now definitely feel the power shifting from side to side off the line and the truck did not do this before, the rear used to stay planted rock solid. Any thoughts on what's going on in there??? Mr. P. <{POST_SNAPBACK}> Is your rear-end still acting up (that sounds kind of weird), or is everything back to normal? I was planning on doing the fluid change soon, good posts! Link to comment Share on other sites More sharing options...
zippy Posted September 12, 2005 Report Share Posted September 12, 2005 the G80 applies to well more than the 8.6 rear. that is gm's code for limited slip/locking differentials. the 8.5 rear in the mid 90's was increased to the 8.625 ring gear size. it wasn't until the later years that the difference was pointed out to the public. Link to comment Share on other sites More sharing options...
misterp Posted September 12, 2005 Author Report Share Posted September 12, 2005 Is your rear-end still acting up (that sounds kind of weird), or is everything back to normal? I was planning on doing the fluid change soon, good posts! Sorry to take so long to reply; no everything was fine within 48-hrs. I can definitely feel what everyone is complaining about now, that there is definitely no positraction above 20mph. Mr. P. Link to comment Share on other sites More sharing options...
SuperDave Posted September 27, 2005 Report Share Posted September 27, 2005 So the front takes two quarts of 75-90 Mobil 1 Gear lube, and the capacity of the rear is what? Also, what is the capacity of the transfer case... how much is the Autotrack II fluid per qt.? Thanks! Link to comment Share on other sites More sharing options...
misterp Posted September 27, 2005 Author Report Share Posted September 27, 2005 Rear axle = almost 3-qts Transfer case = almost 2-qts Mr. P. Link to comment Share on other sites More sharing options...
Ron's SS Posted September 28, 2005 Report Share Posted September 28, 2005 So the front takes two quarts of 75-90 Mobil 1 Gear lube, and the capacity of the rear is what? Also, what is the capacity of the transfer case... how much is the Autotrack II fluid per qt.?Thanks! <{POST_SNAPBACK}> 2 Quarts of the Auto-Trak II, about $6.50 a quart in my neck of the woods. Oh yeah, and that little super gadget from Wal-Mart (the pour spout Mr. P indicates in his how to, if you don't have a gear pump.) That thing is about $3 and screws onto all the different fluids. Link to comment Share on other sites More sharing options...
SuperDave Posted September 29, 2005 Report Share Posted September 29, 2005 Thanks guys... I've got a pour tube, all I need is the lube! Link to comment Share on other sites More sharing options...
CoolBlueSS Posted October 17, 2005 Report Share Posted October 17, 2005 Very good tech, P. I like your gasket saving technique. A little info on the additive, the formula was changed sometime in the mid to late 90s. Both Ford and GM used the same stuff (nasty smelling whale oil/sperm, whatever ). That may be the reason for the change, to work better with the newer rears. Link to comment Share on other sites More sharing options...
kaotik1 Posted February 6, 2006 Report Share Posted February 6, 2006 bump Link to comment Share on other sites More sharing options...
Viperkiller97 Posted April 27, 2006 Report Share Posted April 27, 2006 so does 04 and 05 have the drain plugs and not 03's? <{POST_SNAPBACK}> Well ? Link to comment Share on other sites More sharing options...
misterp Posted April 27, 2006 Author Report Share Posted April 27, 2006 so does 04 and 05 have the drain plugs and not 03's?Well ? This was discussed a few posts earlier in this thread. Some differential housings in these trucks were produced with the drain plug, some were not; you are going to have to inspect your own vehicle and determine what the factory gave you to work with. Mr. P. Link to comment Share on other sites More sharing options...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.