Theres nothing wrong with E10 but fuel quality can vary from place to place.
Unleaded has a fairly short 'shelf' life, so servos that have slow turn over will have stale fuel ,causes poor run,power loss ,flat spots,hard start ,the works.
Remember E10 is 10% ethanol 90% unleaded, so same problems.
Also, some servos have more water in there tanks & if they are low you could get a dose.
Fresh clean E10 has higher octane rating than unleaded & will run better accordingly.
As for bio-diesel, I believe its more viscous & has better lube than normal diesel (especially the low sulphur stuff).
I think its probably fine in older style diesels (low press.) but would be hesitant in using with new ultra high press. injection motors.
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I used to be indecisive but now Im not so sure!!!
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