Oil
- Viscosity
- 5W-20
- Oil type
- Conventional
- Capacity (with filter)
- 4.5 qt
- Capacity (without filter)
- 4.1 qt
OEM notes: API SN
2005 Mazda Mazda6 Maintenance & Specs
Everything you need to maintain your 2005 Mazda Mazda6 — oil specs, maintenance schedule, recalls, and more.
The 2005 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 B6Y1-14-302A, with 2 compatible alternatives listed below. Note: this vehicle has 6 active recalls — check the recalls section below. Below you’ll find complete maintenance specs, fluid capacities, parts, and links to buy what you need.
Data last verified: April 30, 2026
Oil
5W-20
Conventional
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Capacity
4.5 qt
with filter
Drain plug
17 mm
34 Nm torque
Filter
B6Y1-14-302A
Mazda (OEM)
Buy on Amazon →
OEM spec: API SN
Quick DIY Tips for the 2005 Mazda Mazda6
- Torque your drain plug to 34 Nm (25 ft-lbs) to avoid leaks or stripped threads.
- Using the OEM filter (Mazda B6Y1-14-302A) 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.
Filter options
Drain bolt & hardware
- Socket size
- 17 mm
- Thread size
- M14x1.5
- Torque spec
- 34 Nm
- Gasket type
- Crush washer
Notes: 1st gen GG (2.3L MZR I4)
Fluid specifications
Parts & specifications
Spark Plugs
- Type
- Iridium
- Gap
- 0.044
- Quantity
- 4
- Change interval
- 100,000 mi
Battery
- Group size
- 35
- CCA
- 550
Tires
- Size
- 215/55R17
- Front pressure
- 33 PSI
- Rear pressure
- 33 PSI
Air Filter
Cabin Air Filter
Brake Pads
Wiper Blades
Maintenance schedule
Select a mileage interval above to see scheduled maintenance items.
Estimated Current Value
Original MSRP
$30,000
Private Party Value
$3,135 – $3,465
Dealer Retail Value
$3,630 – $4,125
Trade-In Value
$2,805 – $3,135
Depreciation
89%
Estimated values assume average condition and mileage for vehicle age.
Source: estimated
Safety recalls6
Technical Service Bulletins29
Torque specifications
- lug nut
- 80 ft-lbs / 108.5 Nm
- spark plug
- 18 ft-lbs / 24.4 Nm
14mm thread, aluminum head
Save by doing it yourself
A shop typically charges $70–$140 for this service. Buy the parts yourself and save.
Shop Parts for the Mazda Mazda6
Find oil, filters, and maintenance parts for the 2005 Mazda Mazda6 on Amazon.
Tools & supplies
Step-by-step guide
Detailed walkthrough with tips for first-timers.
Read guide →How often to change oil
Intervals, severe service, and what your car needs.
Read guide →Synthetic vs. conventional
Which oil type is right for your engine and budget.
Read guide →Have info for this vehicle?
Help fellow owners — submit specs from your owner's manual.
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