Premier Oil is a special formula which is a combination of solvents, High Molucular-Weight Dispersant and Deposit Control Additive quickly, safely and effectively cleans injectors and soften hard carbon deposits found on Intake Valves & Ports and Grill Lounge so easily dissolved and burned. Premier Oil is a quick and economical solution to overcome the problem of machine limping, pull slow and wasteful of fuel caused by Carbon Deposit in Fuel Injection System.