Opel Automobile Owner's Manual page 203

Service operations
+o Drain water from fuel filter, diesel (with high humidity and / or lower
grade fuel)
Drain CNG oil-separator
Replace and drain fuel filter, diesel (grade EN 590)
Replace fuel filter, external, CNG (grade EN 228)
Check and adjust parking brake (no weight on wheels); visually inspect
wheel mounting and suspension springs front and rear, brake lines,
brake pressure hoses, fuel lines, gas lines of CNG vehicles, level
control and exhaust system
Check exterior of body/underbody corrosion protection and note any
damage in the Service Booklet
+o Visually inspect front and rear wheel brakes
monitoring system is fitted, do not swap wheels over
Annual service check if annual mileage exceeds 20.000 km (12,000
miles)
Engine, transmission (AT, MT), inspect air-conditioning compressor for
leaks 2)
In case of too high consumption / leakage, perform additional work with customer's agreement.
2)
by year
1)
km (x 1000)
1)
miles (x 1000) 1)
2) , if a tyre pressure
Service and maintenance
1 2 3
30 60 90
20 40 60
X X X
Every 4 years / 60.000 km / 40,000 miles
X
Every 4 years / 60.000 km / 40,000 miles
X
X X X
X
X X X
203
4 5
120 150
80 100
X X
X
X
X X
X
X X