transmission and transfer case gear oil

[bl5211a]

I know this must of been discussed a gazillion times.

Should i use straight 90 W in m170 transmission and transfer case or 80-90 or 75-90.

Thinking any would be ok, but thought i would put it out there.

Brian
M170
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Brian
1955 M170
1940 BSA M20

[wesk]

There has to be at least 20 gear oil discussions here on this web site.

Bottom line is to use a gear oil that:

1: has low enough sulphur to prevent corrosion issues with brass parts like the synchro rings in the tranny.

2: the correct viscosity for the season.

3: Doesn't impede the shifting functions of either box.

Do a little search of the web site for many more opinions.
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Wes K
45 MB, 51 M38, 54 M37, 66 M101A1, 60 CJ5, 76 DJ5D, 47Bantam T3-C & 5? M100

Mjeeps photo album: http://www.willysmjeeps.com/v2/modules.php?set_albumName=Wes-Knettle&op=modload&name=gallery&file=index&include=view_album.php

[Hawkshadow]

Hi Brian,

I know that the search function in the forum can be a little difficult. For more specific results I suggest searching the mjeeps forums through google. Starting your search query with "mjeeps +" followed by the topic will give you much more refined results.

Happy searching.
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Jordan

M38 CDN
52-30718

[kenc80]

Here's what I use in my A1:

http://www.tractorsupply.com/en/store/travellerreg%3B-ford-tractor-all-mineral-90-transmission-fluid-2-gal?cm_vc=-10005
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Greenville, SC
62 M38A1