People often ask this sort of question. But, the cost of a repair is going to depend on where you live.

It is best to get on the Phone and call some places in you local area see what they charge.

I would also make sure that my Crankcase Breather system is working OK. If it is restricted the Crankcase Pressure will try to find some other way to get out of the Engine.

It also would not hurt to make sure the upper Oil Pan Bolts are tight.

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84 300D, 82 Volvo 244Gl Diesel