Opel Vectra 1999 1.8 petrol service and maintenance
125 HP, 170 Nm, Manual gearbox, Front wheel drive (FWD)
Engine oil
Engine oil capacity: 4.3 litres (4.5 quarts)
Recommended oil type (Oil Viscosity Classification SAE) is 5W-30
Timing belt
Manufacturers recommended timing belt replacement interval for Opel Vectra 1.8 petrol is 60,000 km.
Running your car in aggressive environments (e.g. salt, sand, etc.) causes timing belt to degrade faster and reduces its lifespan; under such conditions, the belt may need to be replaced sooner.

Opel Vectra 1999 1.8i-16V 2000 - 2002 Opel Vectra 1999 technical data
Opel Vectra 1999 owner reviews
Always consult your vehicle manufacturer's service manual for service intervals and specifications!