Forum Discussion
TS21sso
Sep 07, 2014Explorer
DutchmenSport wrote:
Thanks for the information. My new truck has a little over 3000 miles on it. I've had to add DEF. Took it to a GM dealer (we were on vacation towing the trailer too). They were nice, got us filled up again. They said when we purchased the truck, the DEF was probably not full, it should go much longer between fill-ups than that.
Anyway, I now carry 2 gallons of DEF all the time. No problem for space with that shell I have on the truck. I have free oil changes and servicing on the truck for a long time. So hopefully, the GM guys will know when and how to service the DEF and the filters and everything on regular intervals. I most definitely will ask them about this the first time I take it in for an oil change. Got the truck in April this year, and really use it only to tow my camper and my utility trailer. So everything about this truck is still new to me. I'll take any tips and warnings anyone can throw at me.
Thanks for the tip!
Good idea to either keep DEF on hand or carry with you. sdetweil mentioned shelf life of DEF. My garage will get near 100 degrees in summer.
To keep fresh, I usually add DEF about every 3000 -4000 miles. That way tank never gets near empty and DEF stays fresh.
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