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1978 Case 406
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173 Posts
Discussion Starter #1
Does anyone have a copy of "MB specification for service products"? I need a copy/scan of pages 226-227.1. Thanks

Bob Benyon
1979 Ex BW 1300L
 

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BenzWorld UNIMOG statesman
Unimog 404.1 Diesel (sold :( )1995 LMTV 1078
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5,856 Posts
What is on that page you are looking for?

Someone might have images from that page and just not recognize they do cause they don't know it by page number.
 

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Registered
1978 Case 406
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173 Posts
Discussion Starter #3
I'm looking for the detailed specification for the SAE 10W for a 1300L transmission.

Bob Benyon
1979 Ex BW 1300L
 

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BenzWorld UNIMOG statesman
Unimog 404.1 Diesel (sold :( )1995 LMTV 1078
Joined
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5,856 Posts
I'm looking for the detailed specification for the SAE 10W for a 1300L transmission.

Bob Benyon
1979 Ex BW 1300L
I suspect you have allready searched this topic so for others who might read this thread that have not and have simular questions in mind...... there well could be references to that info in the many tranny oil threads that are located in forums both here at benzworld and in the archives of the Mog Mail list.

Archives the the mail list are at Unimog Discussion and Archive Search :: Index
. MME Archive holds 1997 and up to today.
.. 97-2005 is in it's own locked readable/searchable forum
.. 2006-2008 is in the mail list mirror forum and fully active.
 

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'88 U-1300L, '70 406, '78 406, '78 416 project, '82 406, '57 404, '65 404, '70 404, '68 Haflinger.
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1,849 Posts
Hello Bob,

Maybe my experience with U-1300 trans lube will be of some benefit as you deside on a lube to use. I recently purchased a U-1300 which had the MB specified (modern specs, not pre-synthetic specs) Castrol Syntrans. The transmission shifted ok except for 5th gear. I asked around and several longer term SBU owners told me these trannies are known for poorly shifting 5th gears. In fact, some are so bad that the owners skip 5th gear, especially when cold. The fellow who sold me the 1300 actually told me to start in 5th to avoid having to shift into it. That was too hard on the clutch.

A suggestion was made that synthetic lubes lubricate the synchronizers too well, not allowing the friction that a synchronizer relies on to do it's job. Also, a light weight oil, like the 10W you wanted specs on, was suggested to allow gears to 'spin-up' easier. So I switched the lube over to a good quality 10W hydraulic oil that I had available. Shifting improved, but 5th still gave trouble.

By coincidence I was looking for a recommended lube for my Dodge 2500 with the NV-5600 6 speed manual. Found reference to a transmission lubricant that Amsoil makes that is specifically recommended for the NV-5600, and any synchronizer-type transmission, Amsoil's MTF trans lubricant. It is a very light oil, rated 5W30, as is the 10W. I bought 5 gallons and tried it in the U-1300. What a difference! 5th gear now shifts like other gears. I've not had a single failure-to-shift since changing the fluid, and that's about 1000 miles now.

As a check on lubricating quality, I have checked the transmission temp after some hard highway driving (Interstate, 60-65 mph). Tranny temp runs 160 to 170. Not bad at all. I have heard of some SBU owners having to put coolers on their trannies to cool them off.

Bob
 
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