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1990–1997 Mazda MX-5 Miata Radiator & Cooling FAQ's

Please read our FAQs page to find out more.

Will a thicker radiator help a track‑driven NA?

Yes—higher‑efficiency cores and proper ducting reduce heat‑soak. Add a shroud and verify cap health; bleed carefully to avoid air pockets.

Is an oil cooler necessary for spirited mountain runs?

For sustained high RPM or boosted setups, a thermostatic cooler stabilizes temps. Route lines away from heat and protect with sleeves.

How do I improve airflow through the NA nose?

Seal gaps with foam, use under‑trays/splitters to reduce lift and improve pressure differential, and keep the A/C condenser clean to avoid pre‑heating.