a330captain

Reading about what seems like major issues after purchase with the adblue system on the 250's Starts 10 remaining etc.

Do we see the same issues on the 350's?

What happens when you add Generic ADBlue from AutoZone?

My son drives a sprinter at FedX and they just switched brand of Ad Blue

JimBarnhart

I'm at 15,000 miles on mine, they filled it up at the dealer at my 10,000 mile service. Others have reported adding their own, just need to ensure it meets specification.

Mbenz260e

I haven't had to add it yet on this vehicle but have added my own on the E. Just bought the bottle from MB, cut a hole in the bottom to use a funnel and used the "Peak" brand from Autozone or Walmart which meets the specs. Simple enough procedure just be careful about spills.

You can research online, their is various and differing advice about how often to add adblue.

Just curious what brands to your son switch from/to? I assume was because of cost?

fabbrisd1

AdBlue is branded name for DEF (diesel exhaust fluid) - AdBlue is pricery, generic DEF is not.. good recommendation of filling technique - frankly you only "need" to refill at 10K mile intervals - good recomendation on refil technique from MB - go slowly to minimize "burp back" and no need to "top off" to very full-full.

Mbenz260e

Yeah I typically have been doing right before the 10k interval. Read that filling more often would leave less air in the tank and therefore less condensation? I am not that technical...

Yes watch out for the blurp factor, I usually cover the fill hole I cut with a rag. Just take your time and you should be fine. Not need to over tighten the bottle.

fabbrisd1

No condensation in that tank really - refilling before 10K service interval a good plan - no need for more frequent filling - keep the beat !