click: dude have you seen that grease spot on your inner fender? clack: oh don't worry about it, that's just active undercarriage rust protection
marketing-speak for a chronic oil leak on your automobile - generally one that takes more effort to fix than the car is worth
"click: dude have you seen that grease spot on your inner fender? clack: oh don't worry about it, that's just active undercarriage rust protection" What is the definition of "active undercarriage rust protection"?