ZOLLEX Motor doctor improves compression and oil pressure and reduces oil consumption in old and worn-out engines. Prevents oil penetrating into the combustion chamber, carbon forming and smoking engine. Slows down ageing of new engines, thus extending their service life. Motor Doctor forms a lubricating film on the surfaces of moving parts, provides reliable engine operation in harsh conditions and ensures easy starting all year round. It can be mixed with all synthetic and mineral oils and can be added to the new engine oil with each change. One can is enough for oil systems of up to 6 litres.