So, when servicing the oil on a 747-100 with PW JT9's, are you telling me it's not best practice to open the oil cans with a can opener with "Greene King" stamped on it, obtained from your local when you were an apprentice, not invert, then pour the oil cans into said Homebase watering can with self made quart markings on the side and add to oil tank until such tank is full without said frothing, thus saving time.
