I always remember the WG-30, an aircraft that no-one in the hangar even knew existed, arriving at Bristow Redhill on a demonstration flight. Among a hangar and ramp filled with S61's, 212's, 205, Wessex, Whirlwind, Bell 47, and Hiller 12's, they landed, shut-down and immediately proceeded to hang these little cans under the exhaust to catch the profusely dripping oil. I think all credibility and potential for a sale evaporated immediately!