JDM MAZDA RX-7 FD 13B-REW ENGINE FOR SALE NO FURTHER A MYSTERY

One of several things that could lead to excessive oil intake is apex seal failure which causes greater clearance between the rotor and housing. This permits inner oil leakage into the combustion chamber leading to grey smoke through the exhaust.For instance, Mazda reinforced the rotors and apex seals and extra an extra oil cooler and cooling chann