The old Blow-by issue is making the rounds on the Various Forums again.

On one a Member said He used a Electric AC Delco 215-425 New Air Pump, GM 12568324 $130-150 range to suck out the Blow-by.

Hunter also recently posted a thread on the cost and labor involved in changing the Rear Crank Seal.

I have read that similar Pumps can be to decrease the amount of Oil leaking from the Seals because the decrease or eliminate Crankcase Pressure.

My question is has anyone had experience with such devices and the results in reducing Oil Leaks?

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84 300D, 82 Volvo 244Gl Diesel