Mazda 6 Owners Manual: Recommended Oil
U.S.A. and CANADA
Use SAE 0W-20 engine oil.
Mazda Genuine Oil is used in your Mazda vehicle. Mazda Genuine 0W-20 Oil is required to achieve optimum fuel economy.
For maintenance service, Mazda recommends Mazda Genuine Parts and Castrol® (U.S.A. only).
Only use SAE 0W-20 oil “Certified For Gasoline Engines” by the American Petroleum Institute (API).
Oil with this trademark symbol conforms to the current engine and emission system protection standards and fuel economy requirements of the International Lubricant Standardization and Approval Committee (ILSAC), comprised of U.S. and Japanese automobile manufacturers.
Except U.S.A. and CANADA
Use SAE 5W-30 engine oil.
Oil container labels provide important information.
A chief contribution this type of oil makes to fuel economy is reducing the amount of fuel necessary to overcome engine friction.
For maintenance service, Mazda recommends Mazda Genuine Parts and Castrol® (Mexico only).
(Mexico)
Use SAE 5W-30 engine oil. If SAE 5W-30 engine oil is not available, use SAE 5W-20 engine oil.
The quality designation SM, or ILSAC must be on the label.
Engine Oil
NOTE
Changing the engine oil should be performed by an Authorized Mazda Dealer. ...
Vehicle Engine Control Unit Reset Procedure
After replacing the engine oil, it is recommended to have a repair shop such
as an Authorized Mazda Dealer perform the initialization (engine oil data resetting)
of the recorded value. If the valu ...
Other materials:
Mazda 6 Owners Manual: Special tools
ENGINE
Ford SST numbers are collated with Mazda SST numbers in the example below.
Ford SSTs are marked with Ford SST number.
Example
1: Mazda SST number
2: Ford SST number
LUBRICATION SYSTEM
COOLING SYSTEM
FUEL AND EMISSION CONTROL SYSTEMS
CLUTCH
MANUAL TRANSAXLE
AUTOMATIC T ...
Mazda 6 Owners Manual: Heater core inspection
1. Remove the A/C unit. (See A/C UNIT REMOVAL/INSTALLATION.)
2. Remove the heater core from the A/C unit.
3. Inspect for cracks, damage, and coolant leakage.
If any problems are found, replace the heater core.
4. Inspect for bent fins.
If any are bent, use a flathead screwdriver to stra ...