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Marshall V. Daut · 06-02-2026, 05:45 PM

I mix a 50-50 solution of 600w and STP oil treatment in a cup and then carefully (and slowly) pour this syrup into the gear box. It's thick enough to help reduce the leakage of 600w by itself and the STP clings to the gear surfaces to keep them lubed.
Marshall

06-02-2026, 05:45 PM	#3
Marshall V. Daut Senior Member Join Date: Apr 2011 Location: Davenport, Iowa Posts: 2,899	Re: steering gearbox oil I mix a 50-50 solution of 600w and STP oil treatment in a cup and then carefully (and slowly) pour this syrup into the gear box. It's thick enough to help reduce the leakage of 600w by itself and the STP clings to the gear surfaces to keep them lubed. Marshall