Marvel worked on my Cosmo engine when it sat for 16 years. When I first got it, there was only one whoosh on both rotors. After a few days, and a few cycles with MMO in the holes, 3 powerful whooses per rotor.
When we took it apart, it was just dirty. The engine actually has the same apex seals in it now after the rebuild!!
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1976 Mazda Cosmo RX-5
1976 Mazda Cosmo RX-5
2003 Toyota Tundra TRD
2015 Toyota 4Runner SR5
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