Tranny, Fluid, and Slick50 [Archive] - Forum


View Full Version : Tranny, Fluid, and Slick50

06-21-2007, 01:35 AM
i have the 99 GAGT with the 4t45e and when i went to take off quickly (has never done this before) it felt the the torque converter was slipping until i let off a little. my question is: It there an easy way of checking the fluid?
is there a higher grade fluid i can put in?
would a filter + flush and fill help at all?
And lastly, what about the Slick50 for auto trannies.

Mike Jung
06-21-2007, 04:54 AM
Say, NO! to Slick 50 in your ATF or motor oil.

IMO, would NOT recommend a ATF flush.
Just change the fluid in the pan & change the filter; if you want to change some of the ATF.

No easy way to check the ATF; we have a "sealed" system.
But see: How To: Check automatic transmission fluid (

06-21-2007, 11:45 AM
i just need to get time to so the filter

06-21-2007, 06:51 PM
So what are some fluid recommendations?

01-31-2008, 10:14 PM
/thread necro

Any answer to that?

Because I'm looking at doing a small tune up on my car at 100k [about 1k miles from now]

Included in the list was the Slick50 Tranny treatment...
But now that I see this, I reconsider?

What about the Slick50 Engine treatment?
and the Slick50 Fuel additive to clean the system?

Anyone have any suggestions?

I feel it's pointless to make a new thread on it...
when some of it is already discussed here ;)

01-31-2008, 10:36 PM
After reading up on.
I seem to rethink things.

After digging around more I don't know.

=S lol.
Transmission additives = bad?
Engine additives = ?
Fuel additives = ?