87 Octane should be fine. 10% ethanol is ok, but 15% you should find an owners manual for that or call the Ford dealer who knows.
Avoid 85 octane as is sold in Denver and some areas. It will work in emergency but is bad on the engine long term use.
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2017 SLX 195RB
2021 Jeep Grand Cherokee Summit L 5.7L V8
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