The facet seals distribute oil for the apex seals via oil channels and prevent compression loss. While in the 13B-REW within the RX-seven FD, they hardly ever fall short, but when they do, failure could be blamed on the same concerns that bring about apex seal failure. Mazda began enhancement https://jdm-mazda-engine03703.yomoblog.com/32707033/considerations-to-know-about-rotary-13b