DEF tank size
We have a new 2013 Fleetwood Expedition. I thought the DEF tank was suppose to be 5 gallons. It read at the dash and the tank gauge half full. I added 2.5 gallons and it only came up to 3/4 full. ...
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DEF is Not Fuel so it has no bearing on Mileage!
What it does is clean the Exhaust system and reduce pollution.
What it does is clean the Exhaust system and reduce pollution.
