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Two red stripes. Power - Improved Performance

Caltex™ with Techron® is unbeatable at preventing build-up of harmful deposits, helping your engine perform the way its manufacturers intend it to perform.

What is 'knocking'?

Have you ever heard a sharp 'chattering' or rattling sound from your car engine upon accelerating up a hill or steep incline? Chances are, what you heard was 'knocking' or abnormal combustion. This occurs when the fuel inside the combustion chamber ignites uncontrollably, causing a knocking or pinging sound. It usually only lasts for a while but it can be harmful to your engine in the long run.

The fuel octane level required by a brand new engine is determined by its manufacturer. The engine's octane number requirement (ONR) generally increases as combustion chamber deposits form during the first several thousand kilometres of operation. If the octane appetite of an engine is higher than the octane of the fuel being used, knocking occurs. Since sustained knocking is harmful to an engine, modern cars are fitted with devices called knock sensors (designed to detect knock, often even before the driver does).



  • Power.
  • Economy.
  • Reliability.
  • Fewer Emissions.
  • Smooth Ride.