Montana Owners Club - Keystone Montana 5th Wheel Forum - View Single Post

Cyride · 03-29-2023, 03:35 PM

I have used DEF at the pump for 3years. When I purchased my truck I was advised by a gentleman to do the following. Buy your DEF at truck stops that get a lot of truck traffic and if you buy it off the shelf check the date code to make sure it is fresh! I have never purchased DEF off the shelf and have never had a problem. Because my truck is not a daily driver the only time I fill the DEF tank is when departing on a long trip (like 2000 miles round trip). My truck does not use a lot of DEF, on a 2,500 mile trip pulling my 5th wheel I’ll have just under a half tank when I get home. I would not buy DEF that is a year old!

03-29-2023, 03:35 PM	#38
Cyride Seasoned Camper Join Date: Nov 2018 Location: Fort Dodge Posts: 52 M.O.C. #22980	Pump DEF I have used DEF at the pump for 3years. When I purchased my truck I was advised by a gentleman to do the following. Buy your DEF at truck stops that get a lot of truck traffic and if you buy it off the shelf check the date code to make sure it is fresh! I have never purchased DEF off the shelf and have never had a problem. Because my truck is not a daily driver the only time I fill the DEF tank is when departing on a long trip (like 2000 miles round trip). My truck does not use a lot of DEF, on a 2,500 mile trip pulling my 5th wheel I’ll have just under a half tank when I get home. I would not buy DEF that is a year old!