STP® Smoke Treatment for Petrol Engines. Excessive oil burning and exhaust smoking can occur in older, worn engines when motor oil enters the combustion chamber and is burned along with fuel. This condition, known as oil blow-by, often results when friction and metal-to-metal contact have worn parts and created gaps between the cylinder walls, piston rings and valve guide seats.
STP® Smoke Treatment, used regularly helps:
- Reduce exhaust smoke and engine noise
- Lower oil consumption
- Protect against engine wear