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Two red stripes. Reliability

Caltex™ with Techron® keeps your engine clean on the inside, helping it run more efficiently and reliably.

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What is CCDI?

Combustion chamber deposit interference (CCDI) is the result of physical contact between deposits on the piston top and the bottom of the cylinder head and is manifested as a loud, metallic banging sound when the engine is cold. CCDI is limited to the engines that have been designed primarily to reduce emissions, with minimal clearance – one millimeter or less – between some areas of the piston top and the cylinder head (squish areas) when the piston is at top dead centre.



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