Black plate (362,1)
3.7-liter engine
Use SAE 5W-20 engine oil. If SAE 5W-
20 engine oil is not available, use SAE
10W-30 10W-40 5W-40 engine oil.
The quality designation SM, or ILSAC
must be on the label.
5W-20
120
100
80
60
40
20
0
–20
5040
30
20
10
0
–10
–20
–30
q
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 at least 5 minutes for the oil to return to the oil pan.
4. Pull out the dipstick, wipe it clean, and reinsert it fully.
Full
LowOK
2.5-liter engine
3.7-liter engine
Full
Low
5. 2.5-liter engine
Pull it out again and examine the level.
It's OK between Low and Full.
But if it's near or below Low, add
enough oil to bring the level to Full.
3.7-liter engine
Pull it out again and examine the level.
It's OK between Low and Full. But if
it's below Low, add oil to raise the
level within the hatching zone.
CAUTION
Don't add engine oil over Full. This
may cause engine damage.
6. Make sure the O-ring on the dipstick is positioned properly before reinserting
the dipstick.
8-20
Maintenance and Care
Owner Maintenance
Mazda6_8Z64-EA-08H_Edition1 Page362
Wednesday, June 25 2008 10:5 AM
Form No.8Z64-EA-08H
Black plate (450,1)
Specifications
qEngine
Item Specification
2.5-liter engine 3.7-liter engine
Type DOHC-16V in-line, 4-cylinder DOHC-24V 60°V, 6-cylinder
Bore×Stroke 89.0 × 100 mm (3.50 × 3.94 in) 95.5 × 86.7 mm (3.75 × 3.41 in)
Displacement 2,488 ml (2,488 cc, 151.8 cu in) 3,726 ml (3,726 cc, 227.4 cu in)
Compression ratio 9.710.3
qElectrical System
Item Classification
Battery 12V-46AH/5HR
Spark-plug number 2.5-liter engine LFG1 18 110
*1
L3Y2 18 110
3.7-liter engine CY01 18 110*1
Spark-plug gap2.5-liter engine
1.25―1.35 mm (0.049 ―0.053 in)
3.7-liter engine 1.29―1.45 mm (0.051 ―0.057 in)
*1 ex factory
CAUTION
When cleaning the iridium plugs, do not use a wire brush.
(2.5-liter engine) The fine particulate coating on the iridium alloy and platinum tips
could be damaged.
(3.7-liter engine) The fine particulate coating on the platinum alloy could be
damaged.
q Lubricant Quality
Lubricant Classification
Engine oil Refer to the recommended SAE viscosity numbers on page
8-19.
Manual transaxle 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 transaxle fluid 2.5-liter engine
ATF M-V
3.7-liter engine JWS3309
Power steering fluid ATF M-V
Brake/Clutch fluid SAE J1703 or FMVSS116 DOT-3
10-4
Specifications
Mazda6_8Z64-EA-08H_Edition1 Page450
Wednesday, June 25 2008 10:6 AM
Form No.8Z64-EA-08H
