STP® Super Concentrated High Mileage Engine Flush (15 fl. oz.)

STP Super Concentrated High Mileage Engine Flush cleans and prepares your vehicle’s engine for new oil. This engine flush by STP is scientifically engineered to improve the oil drain for vehicles over 75K miles. The super concentrated cleaning agents actively clean deposits in the engine and help reduce sludge and varnish on cylinder heads. The high-quality base stock is the carrier of active ingredients. Formulated to help deep clean the engine, remove accumulated sludge, and dissolve engine deposits.

This high mileage engine flush will not harm seals and is safe to use every oil change when used as directed. Allow the car’s engine to run until it reaches normal operating temperature, turn engine off, then pour entire bottle into oil crankcase (treats 3-5L). The engine should run for 5 to 15 minutes at idle to circulate flush. DO NOT DRIVE VEHICLE. Drain crankcase and remove the oil filter. Replace drain plug and install the new oil filter. Refill crankcase with new motor oil.