rammike

I've heard of guys using friction modifier additives in their ATF, anyone know what to use and where to buy? I kinda think my trans may have slipped a little while towing a medium wieght load, pavement was wet, but it seemed like trans, and it wasn't locked up at the time...

ctd89-99

Lubeguard in the black plastic bottle. You can get it at NAPA.

HOHN

^^ +1

Great stuff.

nickg

Adjust the bands/ change filter and fluid.

WestTN

Friction modifier REDUCES the holding power of the clutch material. You are already slipping. Friction modifier could finish off your transmission.

MVIEIRA

What WestTN said ! Friction modifier will make the oil more slippery. We use it on Caterpillar equip. that use wet multi-disc brakes in the differentials when the brakes get too jerky or shudder. Be very careful how much you add if you use a friction modifier and follow the directions on how much to add to your fluid capacity. This isn't one of those things if a little is good, a lot more is better. You can make the clutches in a limited-slip diff. useless by adding too much. Lube guard is fine if you have a new trans or clutches and you are getting a little shudder on clutch applications, then it would help smooth out the clutch applications. Otherwise I wouldn't use it. Just my $.02 worth.
Regards, Mike.

JSPulliam21

Not a good idea!

Mike D

Coming from a handshaker guy... j/k

HOHN

I've used lubegard in other auto trannies with good results. Both the red and black bottles.
The yellow bottle works great for handshaker trannies

2Rams

I second lube gaurd. Dave Goerend told me it is what he recommends and he even sent me a bottle with my trans. If it is good enough for Dave's transmissions it's got to be good stuff.

kinser5mfan

lube gaurd makes a little capsule container called tranny dr. maybe has 3oz. of highly concentrated in it if it helps then you can use the black bottle after a good flushing and filter change ( according to mfg. paperwork)

bama

i wouldnt pour anything in mine to intentionally make it slip.......if it shudders,its not holding like it should...........bama

bazdad

You have me confused. I just changed the tran fluid today and have not installed the Lube Guard at this time. My tran has 80k on it. Do I wait until problems or pour in the Lube Guard now? Thanks for stearing us correct.

cLAYH

Shudder and slipping are two different things. If its a shudder the lube guard will help, if its slipping then nothing short of a rebuild will help.

DTT recommonds filling thier trannies with Dex3 and a bottle of red lube guard.

bama

what is it you think its doing when it shudders?