As usual, we have some pretty conflicting stories here.
I like the idea of the increased lubricity since the government has mandated ULS fuel with its decreased lubricity and I have an older engine not specifically designed for ULS. I think I would consider using 2% biodiesel for that reason, possibly even 5%. Or I would use small quantities of pure biodiesel as an additive. I just can't remember seeing it around here anywhere, water or road.
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