The 2004 Mazda MX-5 Miata takes 5W-30 Conventional with a total capacity of 3.7 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. Below you’ll find complete maintenance specs, fluid capacities, parts, and links to buy what you need.
⚑ QUICK DIY TIPS FOR THE 2004 MAZDA MX-5 MIATA
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-30 Conventional as specified by Mazda — using the wrong viscosity can void your powertrain warranty.
Check the maintenance schedule below for your next service interval.
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