The transmission in my 300D turbo has been acting funny lately so I changed the oil last Saturday in hopes that it may help. It would drop out of reverse and it was slow to engage. I drained all the oil in both the pan and torque converter and changed the filter. I refilled with Dex/Mercon and added a quart of Lucas Transmission Treatment. It worked fine for a test drive, then later this week it stopped shifting properly. Now it will not shift unless I bump the shifter to neutral and let off the fuel for a second.

I think I might have used the wrong kind of fluid and/or should not have used the Lucas treatment. I guess I will drain it again tomorrow and replace the oil with ?? Dextron III ?

Thanks for your help.

Kevin Williams
83 300D Turbo
210,000 miles
Louisiana

That or your shifter bushings are worn out.

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RRGrassi


70's Southern Pacific #5608 Fairmont A-4 MOW car

13 VW JSW 2.0 TDI 193K, Tuned with DPF and EGR Delete.

91 W124 300D Turbo replaced, Pressure W/G actuator installed. 210K

90 Dodge D250 5.9 Cummins/5 speed. 400K

How hard is it to replace those?

__________________
" We have nothing to fear but the main stream media itself . . . ."- Adapted from Franklin D Roosevelt for the 21st century

OBK #55

1998 Lincoln Continental - Sold
Max 1984 300TD 285,000 miles - Sold
The Dee8gonator 1987 560SEC 196,000 miles - Sold
Orgasmatron - 2006 CLS500 90,000 miles
2002 C320 Wagon 122,000 miles
2016 AMG GTS 12,000 miles

it sounds like coincidence, my guess is the piston kit needs to be installed.
what kind of problems were you having before you changed the fluid?

__________________
John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!

Before I changed the fluid, the transmission would take 2 or 3 seconds to engage, especially when cold. But it shifted fine. Also, sometimes it would drop into neutral for a second while backing up. The transmission was rebuilt a couple of years ago.

Should be Dexron III. What's in there now?

Sixto
87 300D

Now that there is more info, I had a Chevy do that to me. A month later the T/C grenaded and took out the front pump, which then ended in a tranny that sounded like a grinding power steering pump when the engine was running, with no foward or reverse.

Before the tranny finally went south, it felt like it was put in neutral, or it would take a bit to engage. Once going it shifted fine also.

So I would not worry about the shifter bushings like I said earlier.

Also, when the tranny was rebuilt, it is possible they stabbed the converter wrong on the input shaft.

__________________
RRGrassi


70's Southern Pacific #5608 Fairmont A-4 MOW car

13 VW JSW 2.0 TDI 193K, Tuned with DPF and EGR Delete.

91 W124 300D Turbo replaced, Pressure W/G actuator installed. 210K

90 Dodge D250 5.9 Cummins/5 speed. 400K

I feel a little foolish but I added a half a quart of fluid and now it shifts fine. However, the dipstick shows a little over full. When the transmission was cold, the fluid level was just below the bottom line. So I added a little and the problem resolved. But when it warmed up, the level is about a half inch above the top line. I guess this transmission is fussy about the fluid level. Sorry for bothering everyone when I overlooked something so obvious.

This is the best forum I've ever ran across. I've learned so much about my car in a very short time.

KW
Pollock, LA