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  #1  
Old 09-09-2008, 07:39 PM
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What oil for manual trans

The owners manual says single grade motor oil but my haynes manual says the manual trans uses ATF! I am confused to say the least. Anybody know whats right?

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  #2  
Old 09-09-2008, 07:56 PM
ForcedInduction
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Any off the shelf ATF. 5W30 or 15W40 if its worn and sometimes grinds.
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  #3  
Old 09-09-2008, 08:40 PM
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Go with the manual.

Some cars such as honda uses motor oil for their manual transmission. Using the wrong liquid can make the transmission inoperable. In colder temperatures it will gel up and you wont be able select any gear or drive any where.
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  #4  
Old 09-10-2008, 01:12 AM
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I did some research on this subject a while back for my 240D. I came to the conclusion that Dexron III is the way to go. Mercedes-Benz of Reno agreed.
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83 300D Turbo with manual conversion, early W126 vented front rotors and H4 headlights 400,xxx miles
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  #5  
Old 09-10-2008, 03:50 AM
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I use Delo 400 for summers when doing extreme off roading and for winters I use ATF. If you consider using engine oil, make sure its a HDEO which has the necessary shear strength to cope with the gears. Regular mineral based engine oil would shear very quickly.
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  #6  
Old 09-10-2008, 05:12 AM
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Thumbs up ATF in Manual Transmission

ATF in a Manual Transmission is not all that unusual.....my '94 Ford F-150 uses ATF in it's 5-speed manufactured by Mazda......

The only commonality that I have found between Ford and MB!!

SB
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Diesels:
'85 300D, "Max, Blue Benz", 155K, 27.0 MPG
'84 190D 2.2, "Eva, Brown Benz", 142K, 40.2 MPG
'77 240D (parts car)
'67 Eicher ES 202 Tractor "Otto" (2cyl, Air Cooled, 30HP)
Gassers:
'94 Ford F-150, "Henry", 170K (300 Six) 17.5 MPG
'85 190E 2.3, 148K....Parts Car
'58 Dodge W300M Powerwagon (Flat Fenders) Less than 10 MPG
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  #7  
Old 09-10-2008, 05:16 AM
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Ford syncromesh, lucas synthetic and ATF fluid worked great for me.
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  #8  
Old 09-10-2008, 08:49 AM
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I followed my manual and used Mobil 1 10W30 last year. PO had some kind of transmission fluid (red) in it. So far so good - It reduced the notchy shift from 1-2 and the shifting feels nice and substantial now. Plus, it's really inexpen$ive

Next time, I may try the redline MTF. Others on here have had nice things to say about it.
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Current Mercedes
1979 maple yellow 240D 4-speed


Gone and fondly remembered:
1980 orient red 240D 4-speed

Gone and NOT fondly remembered:
1982 Chna Blue 300TD

Other car in the stable:
2013 VW Jetta Sportwagen TDI / 6-speed MT
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  #9  
Old 09-10-2008, 10:08 AM
ForcedInduction
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Quote:
Originally Posted by zeke View Post
Others on here have had nice things to say about it.
It made my shifting MUCH worse. Avoid it if your tranny has any wear (grinding into 2/3).
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  #10  
Old 09-10-2008, 10:23 AM
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Quote:
Originally Posted by Shorebilly View Post
ATF in a Manual Transmission is not all that unusual.....my '94 Ford F-150 uses ATF in it's 5-speed manufactured by Mazda......

The only commonality that I have found between Ford and MB!!

SB
Ditto for the either M43 or M48 (can't remember which model #) Saganaw 4 speed with Overdrive in my Volvo diesel.
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  #11  
Old 09-10-2008, 10:50 AM
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Quote:
Originally Posted by Shorebilly View Post
The only commonality that I have found between Ford and MB!!

SB
I found another...the plastic clips that connect the door lock link rods to the handle/latch mechanism are the same. I had to replace one in the 300TD, and the MB parts guy tipped me off that I could just go to a McParts store and get the HELP! clips for Ford.
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Current Mercedes
1979 maple yellow 240D 4-speed


Gone and fondly remembered:
1980 orient red 240D 4-speed

Gone and NOT fondly remembered:
1982 Chna Blue 300TD

Other car in the stable:
2013 VW Jetta Sportwagen TDI / 6-speed MT
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  #12  
Old 10-02-2008, 07:54 AM
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I just changed my gear oil to 90W, and now my gearchange is really hard in the morning and when the car is cold. I have to change pretty fast, because where I live its really cold in the winters. What oil would you suggest?
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  #13  
Old 10-02-2008, 07:56 AM
ForcedInduction
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Any ATF or 5W30. 90wt oil is waaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaay too thick.
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  #14  
Old 10-02-2008, 07:59 AM
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You can't put straight weight gear oil in a MB tranny, the soft metal synchros would wear out due to the EP additives. Also shifting would be too heavy. If you want to put gear oil, Chevron makes a boron based synthetic which would do well, also Mobil-I ATF would also do fine.
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  #15  
Old 10-02-2008, 08:04 AM
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anyone have experience with Redline MTL? I'm considering it.

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