Author Topic: ATF for Getrag 265/5  (Read 970 times)

Jimbo1907

  • Junior Level
  • USA, MD, Annapolis
  • Posts: 2
ATF for Getrag 265/5
« on: December 01, 2023, 18:02:13 »
I can't locate my original thread for my Getrag transplant in my 280SL (not that I tried very hard, honestly). But I decided to get her out and drive her a bit, about two weeks ago. Interestingly, I could barely shift the transmission at all.

We had originally (and mistakenly) filled the Getrag box with transmission oil (like 85-90 I think) and it was unshiftable at all) We drained that out and put in ATF. That made it driveable, although a bit stiff. When I went to drive the car recently, it was miserable, but I got it out on the road, slowly, and warmed up the gearbox, and finally it loosened up. We decided to drain the box and refill it with synthetic ATF- I tried to get Redline, but evidently there's a shortage of Redline Dexron 6, so I got a different synthetic.

It's a significant improvement. The box still feels a little notchy, but overall it's MUCH better. I suspect that there was still some 85-90 left in the box from the first fill, even though we had warmed it up and drained it back then, and that it shifts better now because what's in there is only Dexron 6.
« Last Edit: December 01, 2023, 18:09:30 by Jimbo1907 »

mdsalemi

  • Pagoda SL Board
  • Platinum
  • ******
  • USA, NC, Davidson
  • Posts: 6835
Re: ATF for Getrag 265/5
« Reply #1 on: December 02, 2023, 17:28:29 »
Supposedly listed (Redline Dextrin 6) as in stock at Summit Racing.
Michael Salemi
Davidson, North Carolina (Charlotte Area) USA
1969 280SL (USA-Spec)
Signal Red 568G w/Black Leather (Restored)
2023 Ford Maverick Lariat Hybrid "Area 51"
2022 Ford Escape Hybrid
2023 Ford Escape Hybrid

Jack the Knife

  • Full Member
  • Senior
  • ***
  • USA, FL, Vero Beach
  • Posts: 239
Re: ATF for Getrag 265/5
« Reply #2 on: December 08, 2023, 19:34:20 »
I can't locate my original thread for my Getrag transplant in my 280SL (not that I tried very hard, honestly). But I decided to get her out and drive her a bit, about two weeks ago. Interestingly, I could barely shift the transmission at all.

We had originally (and mistakenly) filled the Getrag box with transmission oil (like 85-90 I think) and it was unshiftable at all) We drained that out and put in ATF. That made it driveable, although a bit stiff. When I went to drive the car recently, it was miserable, but I got it out on the road, slowly, and warmed up the gearbox, and finally it loosened up. We decided to drain the box and refill it with synthetic ATF- I tried to get Redline, but evidently there's a shortage of Redline Dexron 6, so I got a different synthetic.

It's a significant improvement. The box still feels a little notchy, but overall it's MUCH better. I suspect that there was still some 85-90 left in the box from the first fill, even though we had warmed it up and drained it back then, and that it shifts better now because what's in there is only Dexron 6.

How do you like your 265/5? I am waiting on a driveshaft for my 230SL to get all the pieces to work. To be clear this is the sport transmission and not the OD transmission.
1964 230SL
2015 G550 """Professional"""

Cees Klumper

  • Full Member
  • Platinum
  • ******
  • USA, CA, De Luz and Los Angeles
  • Posts: 5624
    • http://SL113.org
Re: ATF for Getrag 265/5
« Reply #3 on: December 09, 2023, 11:16:57 »
I think you are correct, that there were, and possibly still are, remnants of the 85/90 oil in the transmission. That stuff is very sticky, compared to ATF. I would not be surprised if another drain/refill after some use cycles, will improve things further.
Cees Klumper
1969 Mercedes 280 SL automatic
1968 Ford Mustang 302 V8
1961 Alfa Romeo Giulietta Sprint Coupe 1600
1962 FIAT 1500S OSCA convertible
1972 Lancia Fulvia Coupe 1.3
1983 Porsche 944 2.5
1990 Ford Bronco II