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Old 01-31-2023, 06:35 PM   #1
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Location of DEF tank

Can anyone tell me how to access or where the def tank is located?
I have a 2018 sprinter 3500 and want to put/add a drain so i can remove old and or bad def from the tank.

Class c thor synergy rv
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Old 02-01-2023, 07:53 AM   #2
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It's upfront on the right side of the engine. Look for the blue cap. There is no need to add a drain, just buy yourself a little hand pump at Harbor Freight to empty the tank. BTW, there really isn't any need to drain it - just drive it more.
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Old 02-01-2023, 11:43 AM   #3
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Thanks. Not able to drive it much as i am on dialysis.

Want to grain it so it doesn't throw a lot of codes.
Will check for a vac pump at harbor freight..
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cat, location, tank

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