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Q: oil rating on 2003 Mazda Miata MX-5

What is the best oil rating for my 2003 mazda miata
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The manual says use oil with an API Service “SG, SH, SJ,SL”. If your ambient temperatures are between -15F and +115F either SAE 5W-30 or SAE 10W-30 is acceptable. If you don’t have the owners manual and would like one you can download it free here:
http://www.autousermanual.com/view/mazda/mx-5-miata/
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