DEF addative
I'm thinking about getting a Sprinter RV and have ? about this additive called DEF or DIF. What's the general cost per gal.? How much dose it hold? How often do you have to fill it up? Plus any ot...
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keep in mind that DEF has a shelf life. Varies with temperature. Usually about a year. It will crystallize. Ask me how I know. I didn't tow enough last year to empty the def tank. Luckily it was covered by my dealer. Tank was removed and about a cup of crystals was in it. Don't buy too far ahead.
