One of many things which could induce too much oil consumption is apex seal failure which brings about increased clearance among the rotor and housing. This enables inside oil leakage in the combustion chamber causing gray smoke from the exhaust. Mazda RX-7 FDs are hardly ever abused, so most would https://rafaeleiify.bloggip.com/38070537/jdm-mazda-rx-7-fd-13b-rew-engine-for-sale-an-overview