Quote:
Originally Posted by cRiPpLe_rOoStEr
It's usual for the tanks to hold enough DEF for such long mileages, but it's also worth to consider cars often resort to both EGR and DEF while heavy-duty trucks and buses usually have either one or another, so a car would use fewer DEF proportionately to the fuel consumption, even though the DEF tank of a truck might hold a volume proportionately closer to that of the fuel tank.
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Makes sense. This car was asking for an oil change when I bought it, so I wonder if it got an oil change and a DEF top-up when it was returned at the end of its lease and they forgot to reset the oil life monitor? Possible I guess.
I've had a jug of DEF sitting in my garage since I bought the car assuming it will run out. Now I'm curious to see how far it will go before needing a refill. Also curious if that 9.5L (2.5 US Gal) jug will even top up the tank?
OK, so a little Googling says BMW claims 10k miles on a fill, so it must have been topped-up right before I bought it. 15k kms is getting close to 10k miles.