Mrchntmarine

any one have experience with adding adblue and how accurate warning light to add fluid is? Just had 15k service and dealer states on ticket they added 6 gal. of adblue. don't understand how as that's full capacity(aprox according to manual) and I never had a warning light come on. thinking they may have added less or my indicator light doesn't work??? Tks

tvsdprasad

As per experts, the "full" capacity is 7 gallons.If any issue further,Go for a trouble shooting with Auto Code Scanner

brutus23079

If you have Audicare, I believe they evacuate and refill the system at each service (15k/25k/35k/45k). So under that, they would indeed add the 6 gal to refill it.

If you paid for it on your own dime, they were still doing the "prescribed" work, but it's a bit of a waste of good Adblue. IIRC, the owner's manual says don't worry about evacuating Adblue unless *none* has been added in four years.

I'm going the DIY route with a VCDS, (although I haven't needed the VCDS for Adblue additions). For my Q5 3.0 TDI, I added a 2.5 gallon Adblue jug at my 15k service and still haven't seen the 1500 mile warning at 22,000 miles. So basically (if the computer is working properly) I have a worst-case burn rate (if my warning light comes on tomorrow) of using 8.5 gal in 23,500 miles or roughly at least 2700 mi / gal. (EDIT: Forgot to subtract original 5000 mi on odo from dealer fillup, so it's 8.5 gal in 18,500 miles or roughly 2200 mi/gal.) So although YMMV, I'm getting (at least) 13k mi / Adblue tank. So now that I've jinxed myself, I'm expecting the 1500 mi light soon...