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Author Topic: Manual Transmission Oil  (Read 3693 times)

alchemist

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Manual Transmission Oil
« on: March 21, 2014, 18:15:17 »
I would like to change the oil of my manual gear for 67 230SL. I am looking for the right oil and viscosity to use. The current manual transmission seems to have the original oil which has the regular oil color. As I read in the Forum, some posting suggest that the manual transmission oil should be replaced with ATF (red) oil. From my past experience, manual gear box usually use 85 Wt. oil. However, this kind of oil becomes very viscous in the cold climate of NY. I would appreciate any suggestions.
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49er

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Re: Manual Transmission Oil
« Reply #1 on: March 21, 2014, 18:21:06 »
ATF is correct for manual transmissions

John
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1969 280SL 003820
Un Restored, All Original, including the paint
Original Owner, Purchased September 18, 1968
4 speed manual, PS. 77217 miles
7280 miles since awoken from her 20+ yr "nap" in 2010

garymand

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Re: Manual Transmission Oil
« Reply #2 on: March 21, 2014, 20:32:09 »
It never should have been ordinary manual transmission oil.  It has always been AFT.  Our manuals will not shift well with the thick ordinary 90wt oil.
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Gary
Early 250SL German version owned since 71, C320, R350, 89 Porsche 944 Turbo S

GGR

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Re: Manual Transmission Oil
« Reply #3 on: March 21, 2014, 21:25:57 »
Yes, you need to use ATF. Regular transmission oil is too thick for some needle bearings in the transmission and they can end up being damaged.
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George Des

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Re: Manual Transmission Oil
« Reply #4 on: March 21, 2014, 23:32:26 »
Yes ATF is correct for the ZF as well. Before I knew this I had once drained my transmission and refilled with regular gear oil. My ZF was not happy. Was grinding gears really bad because the synchros just won't work right with anything other than ATF.
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jaman

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Re: Manual Transmission Oil
« Reply #5 on: April 10, 2014, 18:11:00 »
What brand name are you useing. thanks
« Last Edit: April 10, 2014, 23:01:58 by jaman »
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