Well here is a link to a page that tells you how much oil for a given ratio. Now it will be easy to figure out a two cycle oil ratio http://www.csgnetwork.com/oilfuelcalc.html Maybee help to someone.

You could also try this. http://mopar.mopar1973man.com/cummins/general/2-cycle-oil/ratio/ratio.htm

Thanx ISX... Now there other half of the information on Ratio... http://mopar.mopar1973man.com/cummins/general/2-cycle-oil/failure/failure.htm