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What type gas do you use? 87? 89? 92?

goblue4016
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goblue4016 Enthusiast

goblue4016

Posted
Posted

Hey All,

 

Just curious what type gas so you all use for these trucks? I'm running 89 but I didn't know if these trucks perform better with one type over the other, any added performance or mpg boost with one?

 

I want to see if I'm wasting the little extra I pay for 89 if 87 is the same thing.

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PMattras
PMattras

I am using 87 as to what is noted in the truck manual. Why waste money if you don't need it.

haider320
haider320

89. These engines have to high of a compression ration to run the cheap stuff.

TxTruckMan
TxTruckMan

I ran several tanks over two months with 93 and saw absolutely no difference from 87. Now I stick with 87 and save ~$10 a tank.

LongrangeLauber Senior Enthusiast

LongrangeLauber

Posted
Posted

I've ran both 87 and 93. Small increase in performance with 93 but my mpg dropped overall by a marginal amount. I just keep running 87 and I get better fuel mileage. Not worth the extra coin unless it's required such as for the 6.2 or if you have a tuner set for a hot tune aka 91 or 93 tune

PMattras Enthusiast

PMattras

Posted
Posted

I am using 87 as to what is noted in the truck manual. Why waste money if you don't need it.

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POS VETT Enthusiast

POS VETT

Posted
Posted

E85 most of the time. So far, 93 has been used only for a few tanks and will only be used sparingly. I will not use any octane-level lower than 93.

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MudMutt Enthusiast

MudMutt

Posted
Posted

I have been using 89 since day one ... Truck runs great on it ... I don't see a need for 92-93.

Ridersfan Enthusiast

Ridersfan

Posted
Posted

I use regular 87 for daily driving and I use premium 91 for towing my 6000lbs camper... sometimes the boat too at 3500lbs, but not always... depends on how full tank already was... but only premium 91 in the boat or else it pings.

dbannerz71 Enthusiast

dbannerz71

Posted
Posted

Saw someone post on here about the advice he was given by blackbear where he was told to run 89 octane. I don't know if it had anything to do with the tune or not, or if it was related to being just the right amount of to keep the engine from retarding the timing due to engine knock being sensed. I curious about this. Hopefully he will chime in.

ccdies Enthusiast

ccdies

Posted
Posted

87 here, Id love to run E85, but the nearest gas station is over 15 miles away that carrys it

wurgs Senior Enthusiast

wurgs

Posted
Posted

I only use 91. That's the highest anyone here carries.

POS VETT Enthusiast

POS VETT

Posted
Posted

what is e85 equivalent to octane wise?

It varies depending on alcohol content, but usually over 100.

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