89 Octane gas
Thats the only reason I get 89 cause its .10 more if it was .25 I would cheap out lol
Legend
Joined: Feb 2005
Posts: 8,058
Likes: 184
From: Fort Worth, TX
I just filled up this morning with 93 (to match the SCT tune- the 89 was pinging on the 93 tune)
11.83 MPG on the 89. BUT that is also with 24 1/8 miles passes, for about 5 minutes of total WOT time. I'll fill up again right before I do the gear change and see what Sean's SCT tune did for my mileage on 93, then see what the gears get me, then I'll fill again before I put the rockers on.
11.83 MPG on the 89. BUT that is also with 24 1/8 miles passes, for about 5 minutes of total WOT time. I'll fill up again right before I do the gear change and see what Sean's SCT tune did for my mileage on 93, then see what the gears get me, then I'll fill again before I put the rockers on.
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Record Breaker
Joined: Jun 2008
Posts: 1,970
Likes: 20
From: Clermont, Florida
I finally had to buy gas again today. I filled up on Shell 87 Octane. After I got home I checked my MPG on fuelly.com and it went down about 1 MPG. I am sticking with 87 for now anyway. My truck didn't really run any better on 89, but it didn't run any worse either. For the extra cost I don't think the mid grade gas was worth it.
I may do some more tests with mid-grade later on. I don't drive all that much now that I work at home so it's kind of a wash even if I were to gain a little MPG on mid-grade gas.
Jimmy
I may do some more tests with mid-grade later on. I don't drive all that much now that I work at home so it's kind of a wash even if I were to gain a little MPG on mid-grade gas.
Jimmy
