# RX-8 engine failures

**URL:** <https://community.cartalk.com/t/rx-8-engine-failures/5537>\
**Category:** Maintenance/Repairs\
**Created:** [October 6, 2007, 2:44am UTC](https://community.cartalk.com/t/rx-8-engine-failures/5537 "2007-10-06T02:44:29Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![jganna](https://avatars.discourse-cdn.com/v4/letter/j/838e76/32.png) [@jganna](https://community.cartalk.com/u/jganna)\
**Post date:** [October 6, 2007, 2:44am UTC](https://community.cartalk.com/t/rx-8-engine-failures/5537/1 "2007-10-06T02:44:29Z")

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I have a 2004 Mazda RX-8 that has had some curious problems in the past. With less than 40K mile, I was hearing a pinging sound, had to have the cat converter changed, irregular acceleration, etc. After many trips to the shop, Mazda determined that it was the result of carbon build-up and replaced the engine. Searching other forums, I found many concerned owners who have experience similar problems. It seems the RX-8 has a serious problem and could use a Rx from the Car Doctors. The general concensus is to switch to 5W-30 oil. Just wondering if anyone else is having luck solving a similar problem. This consumer can’t afford to replace the engine again in 30K miles and has to do something. I would prefer not to sell the car though.