Oiltek,Inc. 7808Creekridge Circle, Suite 105 Minneapolis,Minnesota 55439

Reference is made to the convertible promissory note (the “Note”) issued by Oiltek, Inc. (the “Payor”) in favor of you, Michael L. Ray (the “Payee”) in the principal amount of $5,000, dated November 28, 2006, and the subscription agreement (the “Subscription Agreement”) between the Payor and you, the Payee, dated November 28, 2006.

The conversion price with respect to the Note and the Subscription Agreement is listed by mistake as $0.02 per share.  The Payor hereby agrees that the conversion price with respect to the Note and the Subscription Agreement shall be $0.01 per share.