One of many things which could trigger extreme oil intake is apex seal failure which leads to greater clearance between the rotor and housing. This allows inner oil leakage in the combustion chamber causing gray smoke from the exhaust. The 1st engine shipped wasn't superior, I'd them replace it and https://jdmmazdarx-7fd13b-rewengi90724.bloggin-ads.com/61003129/the-single-best-strategy-to-use-for-jdm-mazda-rx-7-fd-13b-rew-engine-for-sale