We have run into the 85 octane "regular" in the mountain regions of the west. In those cases I fill with the mid grade which, surprise, is listed at 87 octane. As my owners manual in my last MH a Chevy and now my Ford stipulates a minimum octane rating of 87 I won't take a chance and put the 85 in my rig. If something failed in my engine the manufacturer could void any warranty due to the use of unrecommended fuel.
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2018 ACE 27.2
Toad 2019 Jeep Cherokee Trailhawk
Roadmaster Falcon All Terrain Towbar
Roadmaster Invisibrake
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