Fuel Mileage sucks - need help
I have million mile Volvo 670 with D13 engine. I was happy with MPG between 7 and 8 from 0.5 million to a million. But then it went below 6.
Last year I replaced injectors and turbo. Less than a month ago changed Crankshaft Dampener, cleaned EGR cooler and replaced Charge Air Cooler.
MPG did improve but still around 6 which really sucks. Oil analysis doesnt come up with any issues.
How can I get the MPG back to where it was?
Is this a good question?