I'm about to break in my new Saito 56. I have some Cool Power 10% which is only 17%. Saito says to use atleast 20% lube in their engines. I know alot of you add castor to your fuel. So if I did my math right. I need to add 3.84 oz of castor to the gallon of the Cool Power to bring it up to 20% total lube. Then my next question is were can I get some castor. I dont know anybody that sells Koltz around here. Can I use to castor oil from the drug store.. Is it the same? Thanks, JT