just diagnosed with need for head gasket replacement. on 2004 Subaru Forester

Sudden loss in mileage right after diagnosis, like about half the mileage. Any ideas?

by in Bellmore, NY on August 12, 2011
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1 answer
ANSWER by , August 15, 2011
Sounds like you may not be running on all cylinders. This will cause a huge loss of fuel mileage.