Purpose and Specifications

PRO-TEC OB is a powerful engine oil additive designed for both diesel and gasoline engines, treating up to 5 liters of oil with its 375ml bottle. It blends zinc, Teflon, and molybdenum to cut friction, reduce wear, and clean dirty engines, helping extend engine life and oil drain intervals up to 50,000 km.

This mid-class product from PRO-TEC protects metal surfaces in high-heat conditions over 100°C, neutralizes corrosive acids, and keeps seals soft to prevent leaks. Expect quieter cold starts, lower fuel use, and smoother operation in everyday driving from -30°C to 150°C engine temps.

When to Use / Replace?

• Add at every oil change or after 10,000 km if engine noise or smoke increases.
• Ideal for older engines over 100,000 km or high-mileage vehicles showing wear.
• Replace additive with new oil every 12 months or 20,000 km; shelf life is 3 years unopened.