oil viscosity MAZDA MODEL MX-5 MIATA 2002 Owners Manual

8-13
Maintenance and Care
Owner Maintenance
Form No. 8Q42-EA-01F

Recommended Oil
Oil container labels provide important
information.
The quality designation SG, SH, SJ,
SL,

or ILSAC
must be on the label.
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 this chart.
Energy conserving oils are recommended.
A chief contribution they make to fuel
economy is reducing the amount of fuel
necessary to overcome engine friction.


Inspecting 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 5 minutes for the oil to return to the oil pan.
4. Pull out the dipstick, wipe it clean, and reinsert it fully.
Engine Oil
SAEFORGASOLINEENGINES10W-30
(ILSAC)
–30 –20–100 1020304050
–20 0 20 40 60 80 100 120
5W-30
10W-30
Using oils of viscosity besides those
recommended for specific temperature
ranges could result in engine damage.
CAUTION
Full
Low OK
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10-4
Form No. 8Q42-EA-01F
Specifications

Engine

Electrical System

Lubricant Quality
*Refer to the recommended SAE viscosity numbers on page 8-13 .
Specifications
Type
DOHC-16V in-line, 4-cylinder
Bore ×Stroke 83×85mm (3.3 ×3.4 in)
Displacement 1,840 ml (1,840 cc, 112.2 cu in)
Compression ratio 10.0: 1
Battery Maintenance-free, 12V-32AH/5HR
Alternator 12V-80 A
Starter 12V-1.0 kW
Spark-plug number NGK
BKR5E11, BKR6E11
DENSO K16PR-U11, K20PR-U11
Spark-plug gap 1.0—1.1 mm (0.040— 0.043 in)
Lubricant Classification
Engine oil
*
API Service ILSAC
SG (Energy Conserving II) —
SH (Energy Conserving II) GF-I
SJ GF-II
SL GF-III
Manual transmission oil Any temperature
API Service GL-4 or GL-5
(SAE 75W-90)
Above 10
°C (50 °F)
API Service GL-4 or GL-5
(SAE 80W-90)
Automatic transmission fluid ATF M-III or equivalent (e.g. Dexron ® III)
Rear differential oil API Service GL-5 (SAE 90)
Power steering fluid ATF M-III or equivalent (e.g. Dexron® III)
Brake/clutch fluid SAE J1703 or FMVSS116 DOT-3
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