Originally posted by tIANcI
Question is what is the best blend of castor and synthetic?
That is what most fuel manufacturer didn't put it down(trade secret) As synthetic will burn out faster than natural caster, Natural caster aides in the cooling and will be the remain in the crankcase, so my guess is around 40% syn and 60% caster out of the lub content percentage.
BTW, Initial D you should ask for the ungummed castor, normal caster oil will leaves a shellac like residue in the crankcase.
