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Discussion Starter · #1 ·
The literature on the diesel is kind of confusing. Will using B20 void the warranty?

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First the link states -

"A maximum blend of 5% biodiesel meeting ASTM specification D975 is recommended. If frequent operation with biodiesel blends greater than 5% but not greater than 20% (B6 to B20) is desired, a shorter interval maintenance schedule is used:
• Oil change at 10,000 miles (B5 biodiesel fuel) • Oil change at 8,000 miles (B20 biodiesel fuel)"

Later it's stated -

"Ultra-low sulfur diesel (ULSD) required
B5 (5% maximum biodiesel approved)"

So recommended is B5 but it sounds like up to B20 is allowable as long as you change the oil more frequently according to the first quote. The second quote makes it sound maximum approved is B5.

Confused ... :)
 

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Discussion Starter · #5 ·
So it doesn't automatically void the warranty to use B20 but a guy should keep a close eye on the oil level and change at 8,000 miles ... I just want to know if they technically allow B20 and it doesn't automatically void the warranty. There's no B5 around here but generally only B20.
 
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