"We have completed our preliminary test, copy of summary is attached, on this oil. Due to the leakage of the original drum, we received only twenty five gallons of this oil in a transfer drum. We have no reason to believe that the oil was contaminated When this transfer was made by the shipper. We have used approximately half of this twenty-five gallons for Analysis and test work to date. Normally, we would wish to burn a minimum of a drum of oil through the burner in order, to make an accurate determination, however, in this case, we believe we have found out sufficient information to indicate that this sample of oil is not satisfactory for use in our type of equipment . ""We still have some oil remaining which we can use for demonstration purpose should you or any of your engineers care to witness a combustion test. We are enclosing also, literature on the Model 722-3 space heater used in this test."