This is a classic case of contract interpretation. Lawyers often become alarmed when they learn that their clients have made handwritten amendments to their written contracts. Here Quality Oil and Kelley Partners entered into a transaction under which Quality loaned Kelley $150,000. The loan was to be forgiven over a five year period as Kelley purchased certain motor oil products from Quality.
purchase from Quality Oil . . . at least eighty-five percent (85%) of [Kelley Partners'] requirements of motor oils during the term of this Agreement. [Kelley Partners] further agrees to purchase not less than two hundred twenty-five thousand (225,000) gallons of Mobil motor oil and 225,000 Mobil branded filters within 60 months from the date hereof.
Kelley argued that the contract expired in 60 months so it had no duty to repay the loan. The Seventh Circuit held that this was incorrect and would make the contract commercially unreasonable.