91 octane vs 85 octane
#1
Member
Thread Starter
91 octane vs 85 octane
So for everyone that says 91 octane is just a waste of gas ... I tryed out the 85 last week and I ended up getting crapy gas mileage my trucks a 97 f150 4.6v8 4x4 with k&n filter and super 44 flowmaster and the 3.55 gears and when putting in the 91 octane gas I usually get about 13/ 14 just city driving and with the 85 I ended up getting 233.5 miles and filled up with 21.7 gallons and that turn out to be 10.7 miles per gallon and its all city driving same driving habits with ac always on ...... Has anyone ever tryed something like that out
#2
Originally Posted by valdo
So for everyone that says 91 octane is just a waste of gas ... I tryed out the 85 last week and I ended up getting crapy gas mileage my trucks a 97 f150 4.6v8 4x4 with k&n filter and super 44 flowmaster and the 3.55 gears and when putting in the 91 octane gas I usually get about 13/ 14 just city driving and with the 85 I ended up getting 233.5 miles and filled up with 21.7 gallons and that turn out to be 10.7 miles per gallon and its all city driving same driving habits with ac always on ...... Has anyone ever tryed something like that out
#3
Northwoods4x4
87 is what is recommended for theses trucks and the lowest octane gas you should run. I use 87 and get 15-16 mixed with 285s. Before I had my edge I was still getting 14-15 mixed city/hwy
#4
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Thread Starter
Originally Posted by 97maroon4x4
87 is what is recommended for theses trucks and the lowest octane gas you should run. I use 87 and get 15-16 mixed with 285s. Before I had my edge I was still getting 14-15 mixed city/hwy
#5
Northwoods4x4
#6
Romp It!
Thats because they don't have obdII ports. Also higher octane gas is an absolute waste if you don't have a tuner to adjust your timing for it.
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#8
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#9
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Thread Starter
Originally Posted by Almighty
If you have an obdII port you can probably find one that works for you
#10
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