The 2017 Mazda6 uses synthetic 0W-20 motor oil as the preferred grade; if 0W-20 isn’t available, a high-quality 5W-20 synthetic oil can be used.
The 2.5L SkyActiv-G engine in most US-spec 2017 Mazda6 models holds about 4.5 quarts of oil with a filter. Use an oil that meets API SN or newer and ILSAC GF-5, and choose Mazda Genuine Oil or another reputable synthetic brand that meets these specs.
Oil type and viscosity
Here are the official oil grade options commonly recommended for the 2017 Mazda6’s SkyActiv-G 2.5L engine. Choose the one that’s available and suitable for your climate.
- 0W-20 synthetic oil (preferred for best cold-start performance and efficiency).
- 5W-20 synthetic oil (acceptable if 0W-20 is not available).
Notes: Avoid thicker grades like 0W-30 or 5W-30 unless specifically advised by Mazda for your market or climate. Always confirm the exact specification in your owner's manual.
Brand and quality notes
Use oil that meets ILSAC GF-5 (or newer) and API SN (or newer). Mazda recommends Mazda Genuine Oil or another high-quality synthetic that fulfills these standards. If you’re unsure, ask a Mazda dealer or a trusted service professional for the correct grade for your region and driving conditions.
Oil capacity and change interval
Understanding how much oil your engine holds and how often to change it helps you plan maintenance reliably.
- Oil capacity: Approximately 4.5 quarts (4.3 liters) with filter, though exact capacity can vary by market and model specifics. Always verify the exact figure in your manual or service guide.
- Oil change interval (normal driving): Generally 7,500 miles (12,000 kilometers) or 12 months, whichever comes first. In severe conditions (short trips, extreme temperatures, heavy towing), change more frequently, such as every 3,750 miles (6,000 kilometers) or 6 months.
- Oil grade reminder: Use 0W-20 as the baseline; 5W-20 is acceptable if 0W-20 isn’t available. In all cases, ensure the oil meets API GF-5/ILSAC SN or newer.
Tip: Always consult your owner’s manual or a Mazda service professional for the exact capacity and interval for your exact trim and market, as there can be regional variations.
Practical maintenance tips
Keep a regular maintenance schedule, check oil level monthly, and top up if needed between changes. Using a high-quality synthetic oil and following Mazda’s recommended intervals helps maximize engine longevity and performance.
Summary
For a 2017 Mazda6 with the 2.5L SkyActiv-G engine, use synthetic 0W-20 oil as the primary grade (5W-20 is acceptable if 0W-20 isn’t available). The oil capacity is about 4.5 quarts with a filter, and oil changes are typically recommended every 7,500 miles (12,000 kilometers) under normal conditions, with more frequent changes under severe driving. Ensure the oil meets API SN and ILSAC GF-5, and prefer Mazda Genuine Oil or another reputable synthetic brand. When in doubt, consult the owner’s manual or a Mazda dealer for the exact specifications for your vehicle and region.