Congratulations on your new purchase.
A few helpful tips.
if I just bought a used Sprinter, the first thing I'd do, change all the fluids, particularly the engine and tranny.
Proper fluids are expensive and seller may have saved money by using less expensive spec oil. Spec is 229.52.
Always vette any potential mechanic. Imperative they specialize in Mercedes. Otherwise, your wasting your money.
RTM, very important.
It’s amazing how much useful information you can find in the operator’s manual for your Sprinter. It’s not the most scintillating of reads, but it’s definitely educational.
sprintervanusa.com
Get a Kruise Bottle, I've seen them on online for as low as $4.99. Mush easier than hoisting a 20 lb container with Water Wiggle for a sprout. Refill K bottle from bulk container. If you do spill any, rise immediately.
Do not allow the DEF low level warning activate or the dreaded "no start countdown" may follow requiring dealer reset.
By a scan gauge to monitor and avoid DPF regenerations. The photo shows EUP Exhaust Temp Upstream of DPF is regenerating over 1,200 degrees F. Normal, about 550F.
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Be aware of counterfeit parts.