Racket
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- First Name
- John
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- Jan 21, 2020
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- 2019 Lariat Supercrew 2WD
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I only see one person saying you can use lower. The original cut-and-paste from Ford said Premium Only.It was mentioned earlier in this thread by tivct that you don't have to use 91 or 93 octane. You can still use 87 or 89 you just won't get the full benefits of the tune.
https://www.ranger5g.com/forum/thre...software-m-9603-reb-released.5508/post-125710
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