Rear end oil for D10 SII

Quick question regarding the rear end oil in a D10 Series II. I'm at the shop and my manual is 30 miles away at home. What weight oil do you use in the rear end of a D10 series II? Also is it detergent or non-detergent?

Thanks,

snowman(MI)

1950 WD, 1966 D-10 III, 1961 D-10 II, 1966 D-15 II Gas, A-C Minibike, 917 Hydro Mower, 917 Hydro Blower w/cab, West Michigan "Allis Express"

Larry in NC wrote:

Universal transmission/hydraulic oil. This is really 20 weight non-detergent oil.

Non-detergent oil should only be used to lubricate door hinges. I use CIH Hytran in my B. D10 takes the same.

From http://www.machinerylubrication.com/Read/702/hydraulic-fluid-types

Detergent or No Detergent
DIN 51524; HLP-D fluids are a class of antiwear hydraulic fluids that contain detergents and dispersants. The use of these fluids is approved by most major hydraulic component manufacturers. Detergent oils have the ability to emulsify water, and disperse and suspend other contaminants such as varnish and sludge. This keeps components free from deposits, however, it also means that contaminants do not settle out - they must be filtered out. These can be desirable properties in mobile hydraulic systems, which unlike industrial systems, have little opportunity for the settling and precipitation of contaminants at the reservoir, due to its relatively small volume.
The main concern with these fluids is that they have excellent water emulsifying ability, which means that if present, water is not separated out of the fluid. Water accelerates the aging of the oil, reduces lubricity and filterability, reduces seal life and leads to corrosion and cavitation. Emulsified water can be turned into steam at highly loaded parts of the system. These problems can be avoided by maintaining water content below the oil’s saturation point at operating temperature.
So as I interpret this you can use detergent oil if you have a good filtration system. Otherwise stick with non detergent.

Edited by DougS - 31 Jul 2017 at 5:04am

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