I was using the Amsoil 10w40 motorcycle oil, in my Ducati Hypermotard 1100S but it seems most Ducati riders prefer the 20w50, I see there is a trend for "lighter" cold flowing oils like the 15w50 & 10w50, in some other brands, I would like to have a better cold start up oil like a 10w and max protection of a 50w, but Amsoil does not make it, so I made it myself, I mixed a qt of 10w40 & 20w50 together and was hopeing to get a 15w45 oil for a compromise, is there anything wrong with what I did? if so why? TIA Alex
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