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>> The main cylinder of a hydrodrive of coupling
The coupling hydrodrive is filled with a liquid of marks DELCO SUPREME II or DOT-3. It is not supposed to hold long time opened a vessel with a liquid or a nutritious tank of the main cylinder. Otherwise because of moisture absorption the overall performance of coupling decreases and deterioration of frictional overlays amplifies. The manufacturer does not recommend to use a silicone liquid, rubber details of a hydrodrive of coupling of brakes otherwise will fail.