Biodiesel blends in newer NCV3 engines?

[Flagster]

On our first summer road trip in our '15 sprinter and am running into a lot of B5-20 blends...TX and OR were as high as 20. MB advises only B5 and lower. I am doing my best to keep it diluted as much as possible. For example while we have been spending a lot of time in Portland, I go across the river to Vancouver WA to fill up but it is often hard to avoid completely. Here in OR for a month and I would prefer to find a local station that has a lower B blend.
I am assuming OR mandates B20...but does anyone know of a website that gives pure diesel locations similar to the puregas website that lists stations without ethanol?
Thanks
Matt

 

[luthj]

I am not aware of any lists for stations with pure diesel.

The biggest concern for bio-diesel in the NCV3 is oil dilution. I would shorten your OCI by 25-30% as a precaution. But the occasional tank of B20 is not going to do any long term harm. Mercedes has provided tacit approval for B5 blends.

If you receive the high oil warning you may have excessive oil dilution.

 

[Flagster]

Thanks luthj...

I am already planning on doing the OCI at 15K instead of the recommended 20K