BMW 3 series 2012 3.0 petrol service and maintenance

Engine oil

Engine oil capacity: 6.5 litres (6.9 quarts)
Oil change interval is 10,000 km or one year, whichever comes first.
Recommended oil type (Oil Viscosity Classification SAE) is 5W-30

Air filter

Replacement interval for the air filter is 20,000 km.
After prolonged driving in particularly dusty conditions, it is advisable to check the condition of the air filter earlier and replace it if the filter is visibly dirty.

Fuel filter

BMW 3 series 3.0 petrol fuel filter replacement interval: 60,000 km

Spark plugs

Recommended spark plugs change interval is 50,000 km.

Timing chain

There is no manufacturer specified replacement interval for the engine timing chain on BMW 3 series 2012 3.0 petrol, expecting it to last until the engine is overhauled (approximately 270,000 km - 450,000 km).
Based on real life experience, the BMW 335i 2012 timing chain change interval is approximately 100,000 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.

Serpentine (drive) belt

BMW 335i serpentine or alternator belt replacement interval is 100,000 km, but in reality it may have a shorter service life and it is advisable to pay close attention to the condition of the belt or to replace it after an interval of 60,000 km.

Engine coolant

Engine coolant (antifreeze) recommended replacement interval for BMW 3 series 3.0 petrol is 80,000 km or 5 years, whichever comes first.
Coolant capacity is 7.2 litres

Valve stem oil seals replacement

Valve stem oil seals replacement for BMW 3 series 3.0 petrol is recommended every 100,000 km.
This BMW engine has high operating temperatures and valve seals often do not last more than 100,000 km. Valve seals that are not replaced in time can cause damage to the catalytic converter and, further down the line, more serious engine damage.

Ignition coils change

Ignition coils change for BMW 3 series 3.0 petrol is recommended every 100,000 km.
This is the recommended change interval for OEM quality coils on an unmodified engine in a standard driving cycle. If inferior coils are installed, the engine is tuned, and the car is used for sporty driving, the coil life may be shorter.