NA Mazda Miata MX-5 Engine Oil Specs (1990-1997 Capacity & Type)

NA Miata Engine Oil

Crankcase Capacity W/O Filter (1990-1993)

3.6 Qt

3.4 L

Crankcase Capacity With Filter (1990-1993)

3.8 Qt

3.6 L

Crankcase Capacity W/O Filter (1994-1997)

3.8 Qt

3.6 L

Crankcase Capacity With Filter (1990-1993)

4.0 Qt

3.8 L

SAE 10W-30

Above -10°F (-23°C) to Over 100°F (38°C)

Engine Oil Specifications:

Less Than -10°F (-23°C) to 60°F (16°C)

SAE 5W-30

Sources:

Mazda Miata 1991 Factory Service Manual - Engines