Hi, I am far from being an expert but can speak from recent experience. I have a non turbo 1998 V70 with 140,000 on the clock. My car began to run rich with lumpy tickover and increased fuel consumption.I tried a plastic glove over oil filler hole and the glove inflated. My oil consumption increased to about a litre every 1,000 miles.
My mechanic fitted a pcv kit that I purchased from Scandix in Germany. All previous problems rectified. Hope this helps.jack
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