Ditch Witch M422 Trencher

doorman · Sep 8, 2012

Can anyone tell me what type oil is used in the main gearbox on this trencher. It uses a 9HP Wisconsin motor. Any help will be appreciated.doorman

greygoat · Sep 9, 2012

IF it has a Wisconsin reduceing gearbox, with an
"Overcenter" hand clutch..the Wisconsin books
say to use the same oil as the crankcase. The
manual has a chart for different temperature ranges...#10 for zero, to #30 for above 60 degrees. However..I use 10-30 in all of my
Wisconsin Engines..1 cyl,2 cyl's, 4Cyl's, and
have had no problems in 20 years. I've got 14
engines right now.

DaveK(IN) · Sep 9, 2012

I have a 422 trencher and use 30wt in the engine and the drive unit.

doorman · Sep 9, 2012

Thanks for the replys. I was previously told to use 90 wt. doorman

Ditch Witch M422 Trencher

doorman

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greygoat

Well-known Member

DaveK(IN)

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doorman

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