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Old 04-03-2014, 06:05 PM   #1
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biodiesel in my interstate

We inadvertantly tanked up with "B11" biodiesel blend. The Sprinter manual clearly forbids the use of any blend greater than "B5". Does anyone have any experience with the use of this blend? Should we have it drained? Use it up and top it off with "B5"?
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Old 04-03-2014, 06:33 PM   #2
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Originally Posted by paullovern View Post
We inadvertantly tanked up with "B11" biodiesel blend. The Sprinter manual clearly forbids the use of any blend greater than "B5". Does anyone have any experience with the use of this blend? Should we have it drained? Use it up and top it off with "B5"?
The use of biodiesel higher than B5 may damage your catalytic exhaust system. I'm mostly sure the engine will burn B11, but you'll probably get error messages on the dashboard from your exhaust system sensors.

On the plus side, B5 is just a percentage. If you mix B0 and B11 in the right proportions, you can get it back down to B5 or less. So if you drain off enough of the B11 and add B0 to replace it, you should be okay. No need to waste the whole tankful.

Besides, depending on how much fuel you still had in the tank before adding the B11, you've probably already diluted it a little. Whether you diluted it enough, though…
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Old 04-04-2014, 08:19 AM   #3
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German engineers like to cover there bud 3 and 4 fold I know I am one of them. As Pro said depending how much you had left in the tank you already deluded it. I would drive 100 miles and top it of with B0 and do the same about 2 or 3 times again to delude it more and more and I believe it should be fine.
The recommendation in the manual assume continues use of higher then B5 which may or may not has an impact on performance and reliability and make sure it is not covered under warranty.
That is what I would without a promise of success.
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Old 04-04-2014, 08:37 AM   #4
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Thanks Protag and vielen dank PSchw!
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Old 04-04-2014, 11:23 AM   #5
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Let us know if you suffer any adverse effects from this.
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Old 04-04-2014, 05:07 PM   #6
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Might check on the sprinter forum. Jim
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Old 04-04-2014, 05:46 PM   #7
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The reason the manufacture does not want Bio diesel greater than B5 is that to high a Bio% will damage the exhaust DOC/DPF after-treatment system. Bio diesel will spoil the precious metal wash coat in the DOC and some DPFs. It has the same affect that leaded gasoline did on automotive catalytic converters. Cost of the DOC and DPF for your vehicle is around $2000 per each component, as per a friend paid for a new DPF for his Sprinter. I would dilute the fuel as much as possible as soon as possible, and hope that you have not done any damage yet.
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