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Mustang Forums
2011-2014 Mustangs
2011-2014 Mustang Talk
2013 GT now takes 5w50??
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<blockquote data-quote="Scuba-Matt" data-source="post: 11806458" data-attributes="member: 25255"><p>My Bother in law who is a Ford engineer just read through this thread. He had a good laugh. He thinks you guys are all oil paranoid. He works in the performance group and wouldn't run the MC 5/20 in his vehicles either. (F150/Fiesta/Mustang GT) If you drive hard or are in harsh conditions you better up the viscosity of your oil. </p><p>I'll stick with Amsoil in mine. 5/30 winter 10/30 summer.</p></blockquote><p></p>
[QUOTE="Scuba-Matt, post: 11806458, member: 25255"] My Bother in law who is a Ford engineer just read through this thread. He had a good laugh. He thinks you guys are all oil paranoid. He works in the performance group and wouldn't run the MC 5/20 in his vehicles either. (F150/Fiesta/Mustang GT) If you drive hard or are in harsh conditions you better up the viscosity of your oil. I'll stick with Amsoil in mine. 5/30 winter 10/30 summer. [/QUOTE]
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2011-2014 Mustang Talk
2013 GT now takes 5w50??
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