Why?

VIPR PWR

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What are the reasons that our trucks need to run at least 91 octane or higher fuel ?
What will happen if 87 or 89 octanes are run in the truck ?
 
ping, ping........you could have a flash done to retard timing so you can run 87 but you will lose a lot of power...and probably worse mileage..
 
I tried a couple gallons of the 87 then 89 octanes and there was no ping at all ---not sure on losing mileage and power didn't seem to suffer....
 
if you still had prem left in the tank your octane was still higher than 89.....you are playing with fire....you can probably get by with easy driving but pulling hills and hard accelleration is going to damage your engine...the 06 (and 05?) have knock sensors so they will help by pulling time but still not a good idea..
 
I don't intend on doing it ---Just wanted to test it to see whether it would effect the way the truck ran....I put the lower octanes in it when I was just short of running out of gas----DTE said 0 for some miles before putting gas in it.....I have a 93 sct tune running ,That I am totally disatisfied with....The truck runs weaker than it did with the stock tune and gas mileage is down from 10.6 city to 9.3 city....I have tried several different tunes from the tuner and it seems to get worse with ever tune sent to me.....I figure I should have been pinging with the lessor octanes ---but it never did ,even under wot.....any ideas???? I'm begining to really get pissed about the SCT. I Cannot get it to go back to the Stock tune ---where did that go ?
 
Last edited:
VIPR PWR said:
What are the reasons that our trucks need to run at least 91 octane or higher fuel ?
What will happen if 87 or 89 octanes are run in the truck ?


*like an AA meeting..*

Hello.. My name is Anthony. I admit, sadly I was an octane cheater.. I would tell people that my #1900 required super unleaded fuel to brag on its thirst of 500+ horses. Yet when pulling up to the pump I would dump 89octane in #1900's tank for the sole purpose of saving money. At first it started with an occasional 89 here and there with significant amounts of 93 present. I'm ashamed to say that the 89's became more frequent and abundant... Then, as gas prices rose I would sometimes go to the local Exxon with my former grocery getter to fill up a 5 gallon tank of 87 octane.. Then, absconding with it back to my lair and pouring it in the tank so no one in public would see. In time I became braver and would drive up to the pump and select 87 when prompted without a second thought. This went on for the first 9,000 miles and all seemed right in the world.

Then it happened. She suddenly began to lose power and eventually it seemed she would barely move at all. One evening after an attempted test-drive around the neighborhood, I opened her hood and discovered that the right side exhaust manifold was glowing red. Of course like any price junkie I was in denial. “How could this happen at just 9k miles?â€￾ I asked. Finally after a full week of hoping the symptoms would just go away I was forced to go to a Dodge dealership for answers. It was Spring Dodge if my memory serves me correctly. They diagnosed the issue and said the front right side cat was stopped up. I denied any wrong doing as the service writer said they will be taking fuel samples. Thank goodness by then the tank had been emptied and filled with 93. No cause was found so they replaced the cat under warranty. Turns out this experience and my visit there was formative to say the least. I learned a valuable lesson. Will I use anything less than 93 again? NOPE! If it’s what the label calls for then that’s what it will get. My price pinching days are over.


The moral? Don’t be penny smart and dollar foolish.
 
Venom Power - That was well written. Personal experience with the AA meetings? Just kidding. Good post!
 
I gained a knack for public speaking and making it interesting back in college. Of course I had to imagine the audience in their underwear.. Here it's easier since all I have to do is write what I WOULD have said verbally. The AA format was an added twist that seemed to fit the occasion.:D
 
VIPR PWR said:
I don't intend on doing it ---Just wanted to test it to see whether it would effect the way the truck ran....I put the lower octanes in it when I was just short of running out of gas----DTE said 0 for some miles before putting gas in it.....I have a 93 sct tune running ,That I am totally disatisfied with....The truck runs weaker than it did with the stock tune and gas mileage is down from 10.6 city to 9.3 city....I have tried several different tunes from the tuner and it seems to get worse with ever tune sent to me.....I figure I should have been pinging with the lessor octanes ---but it never did ,even under wot.....any ideas???? I'm begining to really get pissed about the SCT. I Cannot get it to go back to the Stock tune ---where did that go ?

Sounds like you need to talk to your tuner...your advance may not be programed correctly cause you should be pinging like crazy..
 
Venom Power said:
I gained a knack for public speaking and making it interesting back in college. Of course I had to imagine the audience in their underwear.. Here it's easier since all I have to do is write what I WOULD have said verbally. The AA format was an added twist that seemed to fit the occasion.:D


Funny I read that in my underwear!
 
Thanks TNVIPER---I agree with you fully that it should have been doing the crazy ping....I also intend to get back to the tuner about this....
 
when you think you can save a buck and it ends up costing you 20 you loose every time ,,,,like i tell the goobers who work for me ,,,DO IT RIGHT THE FIRST TIME ,,plus every time you think about dumping in the cheap go go jucie just remember what a collage baseball game sounds like when the hit the ball with a metal bat ,,,PING:rock:
 
The 05 and 06 trucks have a knock sensor and will retard the timing. You lose power.

The 04's do not have a knock sensor. You lose your engine if you do it to long.
 
Venom Power said:
I gained a knack for public speaking and making it interesting back in college. Of course I had to imagine the audience in their underwear.. Here it's easier since all I have to do is write what I WOULD have said verbally. The AA format was an added twist that seemed to fit the occasion.:D


i thought we all entered this forum knowin one has to be in one's underware, does not have to be one's own undies, to participate in the fun:dontknow: :dontknow: :marchmellow: :marchmellow: :rock: :rock:
 
mauiSRT/10 said:
I have never been tempted by the dark side and succumbed to lower 87 octane!!! Blasphamy!!!

Like Smoke said, "dont cheap out on $5 bucks!!!

patrick


Agreed.. if you own a 10, $5 per fill up shouldn't hurt too bad anyways. If it does, you may have chosen the wrong vehicle unfortunately...
:marchmellow: :marchmellow: :marchmellow: :marchmellow:
 
Venom Power said:
*like an AA meeting..*

Hello.. My name is Anthony. I admit, sadly I was an octane cheater.. I would tell people that my #1900 required super unleaded fuel to brag on its thirst of 500+ horses. Yet when pulling up to the pump I would dump 89octane in #1900's tank for the sole purpose of saving money. At first it started with an occasional 89 here and there with significant amounts of 93 present. I'm ashamed to say that the 89's became more frequent and abundant... Then, as gas prices rose I would sometimes go to the local Exxon with my former grocery getter to fill up a 5 gallon tank of 87 octane.. Then, absconding with it back to my lair and pouring it in the tank so no one in public would see. In time I became braver and would drive up to the pump and select 87 when prompted without a second thought. This went on for the first 9,000 miles and all seemed right in the world.

Then it happened. She suddenly began to lose power and eventually it seemed she would barely move at all. One evening after an attempted test-drive around the neighborhood, I opened her hood and discovered that the right side exhaust manifold was glowing red. Of course like any price junkie I was in denial. “How could this happen at just 9k miles?” I asked. Finally after a full week of hoping the symptoms would just go away I was forced to go to a Dodge dealership for answers. It was Spring Dodge if my memory serves me correctly. They diagnosed the issue and said the front right side cat was stopped up. I denied any wrong doing as the service writer said they will be taking fuel samples. Thank goodness by then the tank had been emptied and filled with 93. No cause was found so they replaced the cat under warranty. Turns out this experience and my visit there was formative to say the least. I learned a valuable lesson. Will I use anything less than 93 again? NOPE! If it’s what the label calls for then that’s what it will get. My price pinching days are over.


The moral? Don’t be penny smart and dollar foolish.

Anthony, you're a nut dude.:eek: ;)
You have been away too long and need to get your silly ass back.
Hope all is well and stay safe man. Later!!!!!!!!!!:burnout: :burnout:
 
z-man said:
Anthony, you're a nut dude.:eek: ;)
You have been away too long and need to get your silly ass back.
Hope all is well and stay safe man. Later!!!!!!!!!!:burnout: :burnout:


It may SEEM too long. I've only been away 12 days. That's not even a full two weeks. I have about 16 more to go then I'm out of this place and back home for about three weeks before my tour in Africa.

:hmpf:Not.... looking... forward .. to... that...

I will, however, be purchasing a butt load of juju beads, monkey skulls, :elefant: elephant tusks and chicken claws while in Angola for my garage voodoo experiments trying to obtain another 15 HP or so.:dontknow:
 

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