slowmachine
Well-Known Member
- First Name
- Mike
- Joined
- Jul 18, 2020
- Threads
- 39
- Messages
- 930
- Reaction score
- 1,971
- Location
- New Hampshire
- Vehicle(s)
- 2015 Jeep Wrangler, waiting for a Ranger PHEV
- Thread starter
- #1
One more new guy question. Reading the manual for my new truck (hit 150 miles today) I see that Ford recommends premium fuel for hard use, etc. When I’m driving in 85 degree heat, I’m feeling a bit of rumbling that reminds me of an old Miata running on the knock sensor. I still have 3/4 of the dealer’s full tank of regular unleaded, but intend to fill with 93 octane when it gets to 1/2 tank., just to see if there is any difference. Has anyone else experienced this?
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