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Octane Question

DJ Galloway

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C & A s Dad Senior Enthusiast

C & A s Dad

Posted
Posted

The only way you will ever know for sure is to check the MPG on 87 for at least 8 to 10 fill ups. Then do the same using the 93 and see if see a noticable difference. Many people believe very strongly that they get better mileage with premium and their truck runs better. Others do not agree with this.

 

I use 93 and it did improve my MPG but not a great deal. I do not have the #s with me right now but it was about a .75 mpg improvement. I also tow a 6500 lb camper on occasion and I truly believe it helps me when tuggin the camper.

 

I tried premium in my work Caravan with a 3.3L and it made no difference at all. The difference is a 9.5 to 1 compression ratio in the 5.3 vs apprx 8:1 in the van. It just cannot take advantage of the additional octane.

 

Try it and keep good records and you will know for sure.

tobias Senior Enthusiast

tobias

Posted
Posted
It would if you have the amount of extra cash that I have right now.

 

You know what they say about fools and their money... :D

 

 

Be nice to Hubbycap, Fluff Master General. :D

BigJayDogg3 Senior Enthusiast

BigJayDogg3

Posted
Posted
It would if you have the amount of extra cash that I have right now.

 

You know what they say about fools and their money... :D

 

 

Be nice to my Hubbycap, Fluff Master General. :D

 

 

Ewww. That's gross. :D

98silvz71 Enthusiast

98silvz71

Posted
Posted

I ran 87 octane in my 98 but the guy before me had been running it on 89 octane since 22,000 miles. It did not like the 87 so I decided to try the 91 octane. It got better gas mileage with the 91 to offset the 20 cents difference in price. So I ran that, like Trey said, just try it and figure up your gas mileage over a few tanks to see if it will make a difference. Not every vehicle will see one.

hubbycap Senior Enthusiast

hubbycap

Posted
Posted
It would if you have the amount of extra cash that I have right now.

 

You know what they say about fools and their money... :D

 

 

Be nice to Hubbycap, Fluff Master General. :D

 

 

I was absent the day they were explaining 'Fluff Master General' Daddy, what the hey is that?

hubbycap Senior Enthusiast

hubbycap

Posted
Posted
It would if you have the amount of extra cash that I have right now.

 

You know what they say about fools and their money... :D

 

 

Be nice to Hubbycap, Fluff Master General. :D

 

 

I was absent the day they were explaining 'Fluff Master General' Daddy, what the hey is that?

 

 

It started here.

 

http://www.gm-trucks.com/forums/index.php?...st&p=633630

 

 

 

Got it.

 

I wasn't slighted by your fools and money comment. The point I may not have gotten across was that the only effect that higher octane would have on me was to thin an already embarrassingly thin wallet. :D

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