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Old 04-30-2019, 12:29 AM   #1
Mini-Skoolie
 
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Best engines for Biodiesel?

Anyone here have experiences to share on running biodiesel?

I know I should be able to use biodiesel in any diesel motor, but have a feeling that practical experience may have more opinions.

Thanks!
Kate.
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Old 05-03-2019, 06:06 PM   #2
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I'd like to know this, too! I hadn't considered it when originally planning a skoolie, but seeing how many of the available busses are diesel engines I definitely want to know more about using biodiesel in one!
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Old 05-08-2019, 05:22 PM   #3
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As we're both in Portland OR, maybe we can have a mini skoolie biodiesel meet-up!
Kate.
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Old 05-08-2019, 05:37 PM   #4
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That sounds like a whole nother thread, which I would also happily subscribe to!
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Old 05-08-2019, 06:16 PM   #5
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My bus has the T444E 7.3L engine and i ran lots of 20% biodiesel when I went out west on my cross country skoolie trip. I had no issues with it at all.
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Old 07-27-2019, 03:14 PM   #6
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From what I've read...

From what I've read (and i'm far from informed on the subject--just curious enough to have done a little googling), older IDI (indirect injection) work better with Biodiesel and Waste vegetable oil. The injectors are less likely to clog up (and much cheaper to service if they do clog). They are also just much simpler robust engines, and much cheaper to maintain.



For Ford you would be looking at the 6.9L/7.3L IDI engines manufactured by International from 1983 through 1994.



I'm less familiar with Chevy/GM but I believe you would be looking at the GM 6.2L/6.5L IDI engines manufactured by Detroit Diesel from 1982 through 2000, and actually still being manufactured in smaller numbers for the U.S. military.


I can't comment on how any of these particular engines do with biodiesel, but I know as a general rule, indirect injection engines fair better and it seems these are some of the more common engines found in smaller school buses (I know nothing about larger buses, so i cant help you there).
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Old 08-15-2019, 05:47 PM   #7
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Best engines for wvo and best engines for biodiesel are two different categories. From my experience and research I understand that some of the fuel lines and gasket/ seal materials can chemically react with the bio and eat them up causing leaks. With wvo/svo there are a whole different set of issues and considerations.
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Old 08-15-2019, 06:30 PM   #8
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I can tell you that DEF engines don't tend to like biodiesel above a certain amount. I got 25% biodiesel blend once and the engine lights went haywire until I'd burned it all out of the system. Performance and fuel economy also suffered. I chalked it up to the sensitivity of electronic controlled DEF sucking technology more than the fuel itself though.
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Old 08-15-2019, 07:01 PM   #9
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I would only run biodiesel older idi engines (indirect injection). And biodiesel from a reputable source. Unfortunately my 1991 Isuzu 4bd1t engine is di (direct injection).
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Old Yesterday, 09:26 AM   #10
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My 5.9 Cummins runs fine on Biodiesel.

Older vehicles may have issues with fuel lines as a previous poster mentioned.

The IDI Vs direct injection matter applies to waste vegetable oil not biodiesel.

I don't know if you plan on making your own biodiesel. If you are, I would recommend finding sources for oil before you do anything else.

I ran an Appleseed processor for a few years. As making biodiesel became popular sources of free oil became scarce. People started paying restaurants for their oil. When the places that I had been getting oil from started demanding $1 a gallon for their oil I gave up.
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