diff fluid

[Cj Ford]

I'll be putting my truetrac in a week or so from now it requires no friction modifier since it has no clutches... can I use regular 80W90 gear oil in the sterling 10.50 with the Detroit or do I need to use the 75/140 or what ever ford recommends

[Cj Ford]

back up top .. still need to know

[Lord Tauk]

Synthetic 75W-140

[720Deere]

Why try to save a few bucks on only a few quarts of oil? You only change it once every 10 to 15 engine oil changes and it only takes a few quarts. Go with the Synthetic that is supposed to be in there.

[ns954]

As info,for anyone with a Dana 80 rear axle.Ford recommends 75W-90 per TSB 04-16-4.

[Cj Ford]

Originally Posted by 720Deere

Why try to save a few bucks on only a few quarts of oil? You only change it once every 10 to 15 engine oil changes and it only takes a few quarts. Go with the Synthetic that is supposed to be in there.

It has nothing to do with trying to save a few $$ at all..


I will be doing this job at my work so I can use the hoist/lift and not have to work on my back installing the detroit and setting it up..

The reason I was wondering is I have 80w90 gear oil in 45 gallon drums at the shop (in pneumatic dispensers) and if it was ok to use I would fill it up with that rather then go get 4 individual quarts and put them in with a funnel/hose...


Our shop buys all our oil bulk...



I will go get 4 quarts from napa

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Last edited by Cj Ford : 12-28-2007 at 08:23 PM.

[redstroker_2002]

i have heard good things about amsoil

[brian42]

I would use the same weight that Ford recommends but I wouldn't worry about the friction modifier since you junked the limited slip.

[Cj Ford]

Just picked up 4 quarts from a local dealer of Amsoil got the severe duty 75W-140 Synthetic...


thanks