Engine Oil
5W-20
Conventional
Capacity
4.5 qt
with filter
4.1 qt without filter
Oil Filter
AJTM-14-302
Mazda (OEM)
OEM spec: API SN
The 2003 Mazda Mazda6 takes 5W-20 Conventional with a total capacity of 4.5 quarts (filter included). You’ll need a 17mm socket for the drain plug, torqued to 34 Nm. The OEM oil filter is the Mazda AJTM-14-302, with 3 compatible alternatives listed below. Note: this vehicle has 9 active recalls — check the recalls section below. Below you’ll find complete maintenance specs, fluid capacities, parts, and links to buy what you need.
⚑ QUICK DIY TIPS FOR THE 2003 MAZDA MAZDA6
Torque your drain plug to 34 Nm (25 ft-lbs) to avoid leaks or stripped threads. Using the OEM filter (Mazda AJTM-14-302) is recommended for warranty compliance. Always use 5W-20 Conventional as specified by Mazda — using the wrong viscosity can void your powertrain warranty. Check the maintenance schedule below for your next service interval. Viscosity 5W-20
Oil type Conventional
Capacity (with filter) 4.5 qt
Capacity (w/o filter) 4.1 qt
OEM spec API SN
Filter Options
Mazda L321-14-300A-9U OEM
Buy Extra Guard oil filter
Drain Bolt & Hardware
Socket size 17 mm
Thread M14x1.5
Torque spec 34 Nm
Gasket Crush washer
1st gen GG (2.3L MZR I4)
Type Mazda ATF FZ
Capacity 3.7 qt
Change interval 60,000 mi
DOT type DOT 3
Change interval 45,000 mi
Type FL22
Color Green
Capacity 6 qt
Change interval 100,000 mi
Spark Plugs
Type Iridium
Gap 0.044
Quantity 4
Change interval 100,000 mi
Tires
Size 215/55R17
Front pressure 33 PSI
Rear pressure 33 PSI
Air Filter
Mazda RF2A-13-Z40A-9U OEM
Buy 5k mi 7.5k mi 10k mi 15k mi 20k mi 30k mi 50k mi 60k mi 90k mi 100k mi
≈ every 6 months
▸ Change Engine Oil & Filterspark plug
14mm thread, aluminum head
18 ft-lb · 24.4 Nm
03V206000
ON CERTAIN MINI VANS AND PASSENGER VEHICLES, THE SOCKET HOLDER IN THE FOG LIGHTS IS INSTALLED IN THE LAMP CASING USING PRESSURE. DURING OPERATION OF THE FOG LIGHT, THE HEAT FROM THE BULB CAN EXPAND THE SOCKET HOLDER. THE EXPANSION CAN FORCE THE SOCKET HOLDER REARWARD. AFTER REPEATEDLY BEING SUBJECT TO THIS EXPANSION, IF THE FOG LIGHT IS ALSO SUBJECTED TO VIBRATION DURING VEHICLE OPERATION, THE SOCKET HOLDER WITH THE BULB HOLDER AND THE WIRING HARNESS MAY SEPARATE FROM THE FOG LIGHT CASING.
03V207000
CERTAIN PASSENGER VEHICLES FAIL TO COMPLY WITH REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 135, "PASSENGER CAR BRAKE SYSTEMS." DURING PRODUCTION, THE FLOAT IN THE FLUID LEVEL SENSOR IN THE BRAKE RESERVOIR CAN BE FORCED OFF OF THE GUIDE RAIL DURING THE FILLING OF THE MASTER CYLINDER.
03V531000
ON CERTAIN PASSENGER VEHICLES, THE FUEL SENDER UNIT (FSU) MAY HAVE BEEN IMPROPERLY INSTALLED IN THE FUEL TANK, PRODUCING AN INADEQUATE SEAL, AND FUEL MAY LEAK.
Show all 9 recalls All categories UNKNOWN OR OTHER ENGINE AND ENGINE COOLING:ENGINE VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM:REAR WINDOW ELECTRICAL SYSTEM STRUCTURE:BODY:DOOR POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM) VISIBILITY:REARVIEW MIRRORS/DEVICES:INTERIOR EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC. VEHICLE SPEED CONTROL LATCHES/LOCKS/LINKAGES:DOORS:LATCH STRUCTURE:BODY SERVICE BRAKES, HYDRAULIC EQUIPMENT:ELECTRICAL SUSPENSION ELECTRICAL SYSTEM:12V/24V/48V BATTERY ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:BELTS AND ASSOCIATED PULLEYS EXTERIOR LIGHTING:TURN SIGNAL POWER TRAIN SEATS:FRONT ASSEMBLY:SEAT HEATER/COOLER VISIBILITY:WINDSHIELD POWER TRAIN:AUTOMATIC TRANSMISSION STEERING ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL AIR BAGS FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP SUSPENSION:FRONT EXTERIOR LIGHTING:HEADLIGHTS FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY:FILLER PIPE AND CAP EXTERIOR LIGHTING EQUIPMENT ADAPTIVE/MOBILITY ENGINE AIR BAGS:FRONTAL
07-004-25 UNKNOWN OR OTHER 2025-04-25
A musty/mildew type odor may come from the vents when the air conditioning (A/C) system is operating. It is most noticeable when the A/C is first turned ON. This odor is the result of mold growth in the A/C evaporator/cooling unit which is caused by condensation, dust, and pollen within the cooling unit. This condition is usually worse during high humidity conditions. “Mazda Air Cooling Coil Coating” is available to encapsulate the mold to reduce odors. If the product is properly applied, it can effectively reduce the musty/mildew odor for up to three years.
0100303 ENGINE AND ENGINE COOLING:ENGINE 2004-05-06
FRONT CRANKSHAFT BOLT SERVICE WARNING. *TT
SA-032-25 UNKNOWN OR OTHER 2025-06-19
Some customers may complain about a noisy HVAC blower motor or odor after a cabin air filter replacement. Foreign debris on the blower motor after servicing the cabin air filter may be the cause. During the removal of the cabin air filter, foreign debris (leaves, dust, dirt....ect.) may fall on the blower motor causing a fluttering type noise or odor.
Show all 64 TSBs(+61) Private Party
$2,565–$2,835
Dealer Retail
$2,970–$3,375
Estimated values assume average condition and mileage for vehicle age.
Source: estimated
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