All of the abovementioned troubles, Particularly abnormal oil usage, may lead to turbo failure from the Mazda RX-7 FD. The turbochargers need to have a continuing supply of oil to keep them lubricated and cooled, and if there are actually oil problems, the internals will overheat because of excess friction. https://jasperuacox.tkzblog.com/33624250/5-simple-techniques-for-jdm-mazda-rx-7-fd-13b-rew-engine-for-sale