Opel Signum 2003 2.0 petrol service and maintenance
Engine oil
Engine oil capacity: 5.7 litres (6 quarts)
Recommended oil type (Oil Viscosity Classification SAE) is 5W-30
Timing chain
There is no manufacturer specified replacement interval for the engine timing chain on Opel Signum 2003 2.0 petrol, expecting it to last until the engine is overhauled (approximately 260,000 km - 430,000 km).
Based on real life experience, the Opel Signum 2003 2.0-16V Turbo timing chain change interval is approximately 200,000 km as at this mileage it may become overstretched and require replacement, so it is recommended to check the condition of the chain periodically after this mileage is reached and replace the timing chain if it becomes excessively stretched or if unusual engine noises occur.

Opel Signum 2003 2.0-16V Turbo 2003 - 2005 Opel Signum 2003 technical data
Opel Signum 2003 owner reviews
Always consult your vehicle manufacturer's service manual for service intervals and specifications!