92 300E Transmission Fluid - Should I?
http://www.youtube.com/watch?v=wiCAJ8ULnaI
Theres no saying theyre arent still.
Can I still switch over to Redline High Temp Synthetic ATF or should I stick with Dexron III?
I am at roughly 30k miles so its getting close to a transmission change. I'm also getting a little hard shifting so I would like to change it at this point.




The Best of Mercedes & AMG
You do not want to use 722.6 or 722.9 fluid in your old school transmission.
Dex 3 proper level,work clean,measure at operating temp,replace filter,make sure pan is level and torque properly when reinstalling.Drain the torque converter.
http://www.billsden.org/fileadmin/me...ducts_2005.pdf
Had no problems at 138mph with fresh Dex3 and 190k 300E
http://www.youtube.com/watch?v=yoLkd2HSJw8
Last edited by ohlord; Jul 1, 2009 at 12:47 PM.
You do not want to use 722.6 or 722.9 fluid in your old school transmission.
Dex 3 proper level,work clean,measure at operating temp,replace filter,make sure pan is level and torque properly when reinstalling.Drain the torque converter.
http://www.billsden.org/fileadmin/me...ducts_2005.pdf
Had no problems at 138mph with fresh Dex3 and 190k 300E
http://www.youtube.com/watch?v=yoLkd2HSJw8

And curiously, what's with you guys that are so interactive 'dependent' that you have to have a radio or music on at 138+MPH? I think the visceral effect of going 140MPH really ought to be enough of a rush. My old E type Jag would do an honest 160MPH and I sure as hell didn't want the radio going or any distractions....if for no other reason, I could listen for noises in the engine/drive train that might prove fatal at some point.

Kevin
Kevin
thanks
Kevin
I have a slight leak underneath my car that I always assumed was oil, could it be I'm actually leaking transmission oil/fluid? Anyone else have this issue before? Would it be worth it to do a fluid/filter change at this point? The last record I have of transmission service was in 2000 when the car was at 90k mi, today I have 173k mi on it.
as far as the leak goes.... put some cardboard underneath the car, preferably white, an see if its a redish color then its probably ATF, brown could be engine oil or perhaps power steering fluid.
as far as the low atf fluid reading goes... did you take the car for a drive before taking the reading, IF NOT(assuming the engine was not at normal operating temp) then from what i've learned and read it is ok for the trans fluid to be low.(see the MB Service manual library, section 2710)
the haynes manual suggests that you take the car for a short trip(about 10 miles) do not turn the car off, and then park on level ground, and then check your atf fluid level.
good luck
as far as the leak goes.... put some cardboard underneath the car, preferably white, an see if its a redish color then its probably ATF, brown could be engine oil or perhaps power steering fluid.
as far as the low atf fluid reading goes... did you take the car for a drive before taking the reading, IF NOT(assuming the engine was not at normal operating temp) then from what i've learned and read it is ok for the trans fluid to be low.(see the MB Service manual library, section 2710)
the haynes manual suggests that you take the car for a short trip(about 10 miles) do not turn the car off, and then park on level ground, and then check your atf fluid level.
good luck
The oil I pulled out was really dirty (almost brown) but surprisingly, the pan gasket, the filter and the pan itself were all in good shape (still replaced the gasket though). My drain plug on the pan wouldn't budge so I just drained the torque converter first (that was a pain to get to the drain plug by myself) and got about 80% of what came out of the tranny from there. Then I just slowly drained the rest from the pan itself and got the remaining 20% of fluid. I must have been really low on fluid because I barely filled up a 1.3 gallon container with the old fluid (which would be just over 5 quarts). I put in 3 qts and started her up running through each gear (as recommended) and then put in another 3 qts to top it off.
Took it for a spin and it was very noticeably smoother when shifting gears, not perfect but much improved from before.
Thanks again guys, total cost for supplies and what not was just under $100 and took me about 3 hours to do. I just feel good that I did it myself and I know everything was done clean and done right. I can't imagine most shops you would take it to and spend upwards of $300 would pay nearly as much attention to the details.
The filter I ordered from autohausaz.com for like $11. I also ordered the pan gasket ($5) and also a new torque converter plug and washer ($2).
My wagon is a '92 3.0L (722.358).



