6.0 and Biodiesel
Laughing Gas
Joined: Jan 2010
Posts: 854
Likes: 17
From: Florida
I change my fuel filters frequently (10Kmi) just to be safe. I have seen samples of biodiesel that the local retailer refused to buy - one had a layer of sediment on the bottle like a bottle of wine, the other was cloudy. So it is not just the sediment from your fuel tank that you need to worry about. You can get a bad batch, just like with regular diesel.
Lead Driver
Joined: Feb 2011
Posts: 8,241
Likes: 155
From: L.A. (Lower Alabama)
Seems like it smells different everytime I fill up. Even at the same station. I try to fuel at places that have alot of diesel traffic hoping the fuel might be fresher (also I like the big, high flow, green nozzles) 
Laughing Gas
Joined: Jan 2010
Posts: 854
Likes: 17
From: Florida
I don't know about the smell - just not my thing. At different times of the year, we get palm oil bio (made from coconuts), yellow or brown tallow, corn oil, and rarely soy. The retailer tries to get the least expensive for the season. Palm oil is almost always the cheapest, but it gels at 65-70F - so it is a summer blend. Soy is usually too expensive to be economically viable. It is always important to know what exactly you are buying - I've been stuck with a tank of palm oil in October and going nowhere until afternoon
Lead Driver
Joined: Feb 2011
Posts: 8,241
Likes: 155
From: L.A. (Lower Alabama)
More to know about fuel than I realized. The 10% bio that I'm using has a sticker on the pump that's says sumthing like "low sulfur and recomended for 2007 and newer vehicles" but my truck is an 06. Some of the rural stations have pumps labeled "off road" the farm boys say it has more sulfur but has blue dye in it. I was told not to get caught with it in my street truck or it's an expensive ticket. Not sure who would be looking. Maybe a good idea to use a blend of the two occasionally?
Fleet Mechanic
Joined: Jan 2007
Posts: 1,741
Likes: 3
More to know about fuel than I realized. The 10% bio that I'm using has a sticker on the pump that's says sumthing like "low sulfur and recomended for 2007 and newer vehicles" but my truck is an 06. Some of the rural stations have pumps labeled "off road" the farm boys say it has more sulfur but has blue dye in it. I was told not to get caught with it in my street truck or it's an expensive ticket. Not sure who would be looking. Maybe a good idea to use a blend of the two occasionally?
Off-road diesel is still allowed the 500ppm standard, but that will be changing here in the next year or two.
Off-road fuel is dyed red to differentiate it from on-road fuel, because of the motor fuels ta
es) levied on on-road fuel. Getting caught with off-road fuel in an on-road vehicle will usually result in fines well over 4 digits, and goes higher depending on how much you've got in the tank (the state and the feds want their tax money!).Anecdotal evidence running around the site here indicates that it takes multiple tanks to burn out even the slightest trace of dye, and that for all practical purposes, it does NOT come out of the filters.
Running dyed fuel in a non-farm truck isn't recommended... But it's YOUR wallet.
-blaine
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