Mazda Mazda5 Owner's Manual page 309

Engine oil viscosity, or thickness, has an effect on fuel economy and cold-weather
operation (starting and oil flow).
Low-viscosity engine oils can provide improved fuel economy and cold-weather
performance.
But high-temperature weather conditions require higher-viscosity engine oils for
satisfactory lubrication.
When choosing an oil, consider the temperature range your vehicle will operate in before
the next oil change.
Then select the recommended viscosity from the chart above.
Using oils of viscosity besides those recommended for specific temperature ranges could
result in engine damage.
NOTE
It is normal for all engines to consume engine oil under normal driving conditions.
Engine oil consumption may be as high as 0.8 L/1000 km (1 L/800 miles). This may be
as a result of evaporation, internal ventilation or burning of the lubricating oil in the
working engine. Oil consumption may be higher when the engine is new due to the
running-in process. Oil consumption is also dependant on engine speed and engine load.
Under extreme driving conditions, oil consumption may be higher.
qInspecting Engine Oil Level
1. Be sure the vehicle is on a level
surface.
2. Warm up the engine to normal
operating temperature.
3. Turn it off and wait at least 5 minutes
for the oil to return to the sump.
4. Pull out the dipstick, wipe it clean, and
reinsert it fully.
CAUTION
SKYACTIV-G 2.0
Maintenance and Care
Owner Maintenance
MAX
OK
MIN
8-13