Many of us have seen red goo in filers etc after a lot of bio has been through, even well washed or settled bio.
I was wondering if, after settling/washing and only leaving a trace amount of soap (say 30ppm) that it might be sensible to add a small amount of methanol to prevent that remaining amount dropping out.
But then you're into the questionable realm of road duty on the methanol "additive". But what is the difference between biodiesel that isn't properly demethed and biodiesel that is completely demethed but with a trace of methanol added back?
Presumably at low concentrations it won't do any harm to Aluminium components?
Is glycerol soluble in petrol in the same way that it is soluble in methanol?
