722.6 Leak from Torque Converter Area - Page 2 - PeachParts Mercedes-Benz Forum

shertex · #16 07-17-2015, 01:48 PM

Yeah, I'm not sure I'll ever be able to find out what the dealer did or didn't do at 40k.

In the meantime, I stumbled upon what appears to a great local transmission shop...in business since 1973. Stopped by to ask a couple of questions, and before I knew the main tech was showing me all around the shop, showing me transmissions in various states of disassembly, helping me to see for myself how and where leaks occur. It was a good basic education for me.

So I'm on their schedule to get the leak addressed.

Dan Stokes · #17 07-17-2015, 02:37 PM

Sure sounds like a great shop. Best of luck with them. If you were in Wilmington, NC I could send you to our guy but........

Keep us posted.

Dan

shertex · #18 08-21-2015, 03:49 PM

An update....Took it to tranny shop today to put it up on the lift. Tech strongly suspects front pump seal (at least) from visual inspection, but can't be sure without pulling the tranny. But between four hours bench time and removal and installation of tranny, that starts to add up $$$. He said that, if the problem is the bushing, I should be able to hear something prior to catastrophic failure. So, I'm just going to roll the dice, keep adding fluid, and hope for the best. Since I was probably looking at a solid $1000-1200 (or more if the torque converter shaft was worn), it just didn't seem to make sense to spend the money. Hope I'm not being penny wise and pound foolish, but today at least this seems to make the most sense.

leathermang · #19 08-21-2015, 04:00 PM

Suck out enough trans fluid so you can put in one or two cans of Trans-x.
May have to do it more than once depending on how much you are leaking..
check archives for Lincoln using my name.... it is still holding..
Mild screeching might be a belt ... hopefully...

shertex · #20 08-21-2015, 04:07 PM

Quote:

Originally Posted by leathermang

Suck out enough trans fluid so you can put in one or two cans of Trans-x.
May have to do it more than once depending on how much you are leaking..
check archives for Lincoln using my name.... it is still holding..
Mild screeching might be a belt ... hopefully...

I thought about using the Lucas product....I suppose Trans-X would be similar....but I'm hesitant due to how particular the 722.6 is as to fluid composition. In general, I'm a believer in stop leak products....but somehow this tranny makes me nervous.

I'm losing about 7 oz. every 1,000 miles.

leathermang · #21 08-21-2015, 04:12 PM

I only have experience with trans-x ... starting about 1975... with a Rambler with only one gear when I bought it....

Zulfiqar · #22 08-21-2015, 05:15 PM

I cannot comment on what exactly transX does, but in most cases it helps in a situation with hardened rubber parts.

The case in question here is severely worn down metal parts. And once the trans starts to make noise its wearing down incredibly fast.

leathermang · #23 08-21-2015, 05:25 PM

I could not tell from his description if it really was metal to metal ...and he had already decided to wait... so I was just suggesting how to keep the fluid in there.. Trans-x certainly not a fix for anything except built up varnish dissolving...and swelling some seals...

leathermang · #24 08-21-2015, 05:35 PM

Quote:

Originally Posted by 97 SL320

Fluid change intervals have no affect on the longevity of the bushing, the oil never gets that "bad".......

IF the fluid is providing ANY lubrication function..... then it can lose that ability from things like Foaming or excessive heat....
Sometimes things like having to rock a car by changing from forward to reverse quickly... like to get out of a hole.... can raise the temperature to where the life of the fluid is reduced to minutes.... above a certain point every ten degrees cuts the lubrication life in half.... this used to be explained in the owner books which came with automobiles....
Foaming can be caused by overfilling the trans....