Some updates.
I've been trying 60 mph. Last tank, although a bit short, showed no real difference even had ac on during acceleration as some people here seem to think it has less drain then.
Trying again this tank, but with more neutral shifting.
I've been considering putting in a gallon or two of e85 once the full tank has room for it. Would it mix in enough to not matter as far as being safe for my engine? Only reason I want to do this is the fact that e85 is 2.99 while reg gas is between 3.95 and 4.10. So having two gallons mixed in with the tank would save two dollars or so, which would take me back to around 20 dollar average for 200 miles. Just an idea.
I think I'm going to seal off grill block a bit better soon too. Just need to get some clear silicone.
Also, oil is 5w20. Ford dealership seems to be using that now.
I'm fairly happy with what I've been getting. May average was 35.7 mpg. 10 mpg over epa combined.
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