One of many things which could lead to extreme oil intake is apex seal failure which leads to greater clearance in between the rotor and housing. This allows inner oil leakage in the combustion chamber leading to gray smoke within the exhaust. Honestly I have acquired areas from numerous importers https://jdmmazdarx-7fd13b-rewengi78742.ambien-blog.com/44589347/jdm-mazda-rx-7-fd-13b-rew-engine-for-sale-an-overview