Recommended Oil and Gas for 1983 RX-7

Asked by Dave91901 May 24, 2013 at 01:53 AM about the 1983 Mazda RX-7 GS

Question type: General

What is the recommended oil type and octane gas for the 1983 Mazda RX-7?  Also is synthetic oil (i.e. Amsoil) recommended?..Thanx

1 Answer
9,575

Lars answered 10 years ago

Oil: any API SD/SE or higher spec mineral only oil with a viscosity of 10W-30 (for temperatures between -25 and +30 degrees C) or 20W-50 (for temperatures above -10 degrees C). Synthetic oil has a nasty habit of leaving more deposits when it is burnt, which happens due to the oil injection into the cobustion chamber to lubricate the rotor apex seals. Fuel: it will run quite happily on 95RON or 85MON fuel provided the timing is set correctly.

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