how does a rotary engine work

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rotary engines burn a small amount of oil by design (to preserve the seals,) requiring the owner to periodically add a little bit of oil. Not a big deal in road-going cars, but worth a note. One of the biggest disadvantages to rotary engines is their proneness to fail. While the likelihood of going up in a big puff of smoke is rare, owners of Mazda RX-7s and RX-8s commonly complain about engine problems. In the RX-8, Mazda fitted their Renesis rotary engine which is a huge improvement over the old design, but is still prone to failure.

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