low sulfur diesel damage ? - Ford Powerstroke Diesel Forum
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post #1 of 4 Old 12-23-2007, 06:19 PM Thread Starter
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low sulfur diesel damage ?

I just bought a 2008 F250. Has about 2000 miles on it. Was about to run out of fuel and had to put some low sulfur diesel 50 ppm about 6 gallon to keep from running out. Anyway this could damage anything?
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post #2 of 4 Old 12-23-2007, 06:24 PM
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The only real problem that it should cause is the DPF will build up soot faster and go into regen more often until you burn that fuel up. 6 gallons shouldn't be enough to cause any problems especially if you top the tank off with ULSD.
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post #3 of 4 Old 12-23-2007, 06:27 PM

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i agree with matt

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post #4 of 4 Old 01-09-2008, 05:39 PM
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Sulfur poisons the catalyst (DOC) coating. It will eventually strip it off. You will not be able to maintain adequate exhaust temperatures to regenerate the DPF. Your soot output won't really change. You just won't be able to regenerate if you do strip the coating. 50 ppm, and 6 gallons of it shouldn't ruin the DOC, but it certainly will affect it. Just don't do it again and you should be just fine. If you ruin your DOC under warranty, they will replace it obviously, but it can be tested to prove that it was sulfur poisoned, and then you'll be stuck with the bill.

By the way, ULSD is a good thing for your engine. Your oil will be less acidic and you will have longer engine life.

Hope that helps.
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