2017 Volvo vnl760 with D13, automated, 540k. Getting 5mpg at 65 regardless of load weight. Just replaced fuel and air filters. What else should I try?
Horrible Fuel Milage
Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by OTH T&L, Mar 21, 2020.
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How about the turbo? Is it smoking at all?
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Not that I have noticed. I do go through a fair amount of coolant. Have to put some in every other day or 2 tops.
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Coolant usage may be tied to it. head gasket? Might need tondo a leakdown test.
PE_T Thanks this. -
Have somebody do a low power check. They should check for boost leaks, turbo adjustment, cutout test, etc.
Be sure and tell them that you’re having to add coolant.PE_T Thanks this. -
If you’re going through that much coolant, you’ve got a problem
PE_T and daf105paccar Thank this.
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