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Old 02-05-2013, 04:31 PM   #2740
Scooby Specialist
Member#: 260501
Join Date: Oct 2010
Chapter/Region: AKIC
Location: Anchorage, Alaska
2003 miata SE


Originally Posted by xabre1200 View Post
Why would they void your warranty for using 5w40? It says in the owners manual that you can use 5w40.
It specifically states 5w30, and has to meet some eco friendly standard.
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