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Mazda RX-7 (1986–1991)
Maintenance Schedule
8 recurring services keep the 1986–1991 Mazda RX-7 healthy — starting with oil changes every 3,000 miles. Budget roughly $3,500–6,400 in routine maintenance over 100,000 miles at typical U.S. shop prices.
Applies to model years 1986, 1987, 1988, 1989, 1990, 1991
Full schedule
Intervals follow the factory maintenance schedule for the 1986-1991 Mazda RX-7. Cost ranges are typical U.S. shop prices.
| Service | Interval | Est. cost | Notes |
|---|---|---|---|
| Oil Change | Every 3,000 mi or 3 mo | $40–70 | Rotary engine oil and filter replacement |
| Spark Plugs | Every 15,000 mi or 15 mo | $60–120 | Leading and trailing spark plugs replacement |
| Fuel Filter | Every 15,000 mi or 15 mo | $30–60 | Fuel filter replacement |
| Brake Fluid | Every 30,000 mi or 2 yr | $55–85 | DOT 3 brake fluid replacement |
| Transmission Fluid | Every 30,000 mi or 3 yr | $70–120 | Manual or automatic transmission fluid change |
| Coolant Flush | Every 30,000 mi or 3 yr | $70–110 | Rotary engine cooling system flush |
| Air Pump Service | Every 30,000 mi or 30 mo | $100–180 | Emissions air pump service |
| Apex Seals Inspection | Every 60,000 mi or 5 yr | $800–1,500 | Rotary engine apex seals inspection and replacement |
Common questions
How often should I change the oil on a 1986–1991 Mazda RX-7?
Every 3,000 miles or 3 months, whichever comes first. A typical U.S. shop charges $40–70. Rotary engine oil and filter replacement.
How much does it cost to maintain a Mazda RX-7 (1986–1991)?
Routine maintenance on the 1986–1991 Mazda RX-7 runs roughly $3,500–6,400 over 100,000 miles at typical U.S. shop prices, spread across 8 recurring services. Independent shops usually land near the low end; dealers near the high end.
What is the most expensive scheduled service on this RX-7?
Apex Seals Inspection at $800–1,500, due every 60,000 miles. Rotary engine apex seals inspection and replacement.
Cost ranges are estimates for typical U.S. independent shops and dealers; your local prices will vary. Always confirm intervals against your owner's manual — severe driving conditions (towing, short trips, extreme heat or cold) shorten many of them.