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The Amazing 5.3 L83 V8

4x4LJB

By 4x4LJB
in Engines & Drivetrain

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m3n00b Enthusiast

m3n00b

Posted
Posted

I'm almost positive the gas cap SAYS to run 91 in the 6.2

 

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It says premium 91 recommended.

 

-tapa

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scottie350 Enthusiast

scottie350

Posted
Posted

If it's on the gas cap, that should be what u run. I know it doesn't say "91 recommended...but you can run 87 "

 

Yes you CAN run 87, you can run whatever u want in an engine fuel wise, doesn't mean it's good for it.

 

 

I don't understand ppl getting these 6.2 that says right on the gas cap 91 octane and go ahead and stick 87 in it.

 

 

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m3n00b Enthusiast

m3n00b

Posted
Posted

If it's on the gas cap, that should be what u run. I know it doesn't say "91 recommended...but you can run 87 "

 

Yes you CAN run 87, you can run whatever u want in an engine fuel wise, doesn't mean it's good for it.

 

 

I don't understand ppl getting these 6.2 that says right on the gas cap 91 octane and go ahead and stick 87 in it.

 

 

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Me either . It's only 20 cents more per gallon.

 

-tapa

Imcrazy Senior Enthusiast

Imcrazy

Posted
Posted

Maybe it's my imagination but, I put a tank of 89 in my 5.3 powered Silverado and I think it's running better.

scottie350 Enthusiast

scottie350

Posted
Posted

Yup it's your imagination

Hardly see that it's imagination considering the knock it pulls and the timing advance it pulls on 87

 

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SlavO Enthusiast

SlavO

Posted
Posted

Well i ONLY put exxon or shell gas in.. Mine has drove great for 66,+++ miles. Even better since i put the 87 tuner on.4ef7e6f3069344d00aeb10c285fde951.jpg941ccde4e3b145845fdd1650975ab4f2.jpg

For real gm knows way more then an of us... just use what they recommend. Im sure some people have lemons but that's not even 1% of are trucks engines. Ive hand mine for 2 years in May. Not 1 person I've talked to about their truck in real life in person had a bad thing to say... and i would say about 4 people a week ask me about my truck in just the last year. 14/15 are everywhere around here now... gl with yours tho. Hopefully i get a 16 soon tho.. love the new look.

scottie350 Enthusiast

scottie350

Posted
Posted

So...when ppl ...and people who do this professionally...have pulled logs that blatantly show that they pull high amounts of knock ect from 87 octane gasoline.....

 

The fact that these trucks feels sluggish and like shit a quick tune wakes that right up too points more to their genius

 

The manufacturer would never lie for many reasons I suppose...

 

Anyway yes you do you, I'll do me

 

 

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scottie350 Enthusiast

scottie350

Posted
Posted

Not sure what u r trying to show with the 17.2 mpg, these trucks are claimed for 30 remember(that was a joke) ;-)

 

Lifted guys tuned properly are running consistent 20s..

 

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SlavO Enthusiast

SlavO

Posted
Posted

Not sure what u r trying to show with the 17.2 mpg, these trucks are claimed for 30 remember ;-)

 

Lifted guys tuned properly are running consistent 20s..

 

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People can say whatever pics of 30 mpg or. 20mpg. Not happening i baby mine im only leveled on 275/60/20. 04b4f4131c80e5a7539ea4d8eebb4ac6.jpg

It matters a lot where u live as well. Colder temperatures hurt big time

SlavO Enthusiast

SlavO

Posted
Posted

So...when ppl ...and people who do this professionally...have pulled logs that blatantly show that they pull high amounts of knock ect from 87 octane gasoline.....

 

The fact that these trucks feels sluggish and like shit a quick tune wakes that right up too points more to their genius

 

The manufacturer would never lie for many reasons I suppose...

 

Anyway yes you do you, I'll do me

 

 

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Who anyone here would love to see there numbers... if a truck is leveled or lifted say buy to good MPG.... it's a truck im happy with 15mpg the way i drive most of the time and im n the DMV traffic sucks around here.
SlavO Enthusiast

SlavO

Posted
Posted

Colder intake temperatures hurt power....what?

Do you....nope...nope nevermind..nope I'm done

 

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Never said power, can u read? Nice truck btw
scottie350 Enthusiast

scottie350

Posted
Posted

I just didn't get why u posted a picture of your cluster with mpg on it. Considering the topic of conversation.

 

There's plenty, search around, I found several threads containing it all last night alone

 

I just have no idea wtf u are getting at with any of ur pics. The mpg bit was a joke on my part. As we were talking about the effects of 87 octane on these engine and u post ur gauge cluster and ur truck on a jack...I just don't know what ur getting at

 

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scottie350 Enthusiast

scottie350

Posted
Posted

Never said power, can u read? Nice truck btw

Well what are u getting at? You didn't say anything but "cold weather hurts" hurt what? We are talking about he effects of 87 octane on a high compression engine, therefore does it hurt octane rating aka make knock worse? Nope hot air does that.

 

Does it rob mpg? Once the truck is up to temperature and ur INTAKEING that cold air, you'll actually see more power, power to weight should actually see better gas mileage then hot weather

 

 

So yes I can read, I just have no clue what ur getting at

 

 

And also

 

Thank you haha

 

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