Best gas?

Warnoffroad · Post by **Warnoffroad** » Wed Jul 09, 2003 8:27 pm

Is will 93 hurt our trucks? Would 89 work better?

Steven · Post by **Steven** » Thu Jul 10, 2003 5:54 am

93 octane will not hurt your truck, but if you dont have some kind of chip or programmer, you wont be able to take full advantage of the higer octane. Before I had the chip, just to keep things clean, I'd run a tank of 93 octane every 2-3 tank fulls.

It has a higher detonation than lower octane, and i believe a hotter one too. I just felt that it kept things cleaner in the motor.

No worries.

Warnoffroad · Post by **Warnoffroad** » Thu Jul 10, 2003 10:14 am

I do 93 everyother or 3rd tank too. thanks

quickbiker · Post by **quickbiker** » Fri Jul 11, 2003 3:53 pm

I got mine tuned for 93 with the hpp3.

QnsRyche · Post by **QnsRyche** » Wed Jul 16, 2003 9:30 am

around town 87... but towing i MUST use super otherwise it pings

a2b · Post by **a2b** » Wed Jul 16, 2003 11:38 am

86 in west texas

NTXCrew · Post by **NTXCrew** » Wed Jul 16, 2003 11:52 am

what about TX???

a2b · Post by **a2b** » Wed Jul 16, 2003 5:48 pm

NTXCrew wrote:what about TX???

when i drive thru tx, around el paso on up to midland, i always ask my self....should i get 86 or 88.....hmmmm, instead of the usual 87 or 89....its the only place i know thats like that. it may be in new mexico too.

Rusty · Post by **Rusty** » Wed Jul 16, 2003 6:00 pm

a2b wrote:
NTXCrew wrote:what about TX???

when i drive thru tx, around el paso on up to midland, i always ask my self....should i get 86 or 88.....hmmmm, instead of the usual 87 or 89....its the only place i know thats like that. it may be in new mexico too.

Hmm, I wonder why it's like that. Anyone know?

Post by **HenryJ** » Wed Jul 16, 2003 6:08 pm

GaryH wrote:
a2b wrote:
when i drive thru tx, around el paso on up to midland, i always ask my self....should i get 86 or 88.....hmmmm, instead of the usual 87 or 89....its the only place i know thats like that. it may be in new mexico too.

Hmm, I wonder why it's like that. Anyone know?

Did you notice if it was Research Octane No. or Motor Octane No. ?

Research Octane No. run higher than Motor Octane Numbers.

Most pumps here use (R+M)/2 , the average.

If it ends in a decimal equivalent , some states may allow it to be rounded to the next higher number?

Rusty · Post by **Rusty** » Wed Jul 16, 2003 6:15 pm

HenryJ wrote:
Did you notice if it was Research Octane No. or Motor Octane No. ?

Research Octane No. run higher than Motor Octane Numbers.

Most pumps here use (R+M)/2 , the average.

If it ends in a decimal equivalent , some states may allow it to be rounded to the next higher number?

Didn't think about that. Makes sense. Unfortunately, I've turned into "Joe Average Consumer" and quit looking at things like that. I just zero in on the "87" part at the pump and try to avoid looking at the price!

Post by **HenryJ** » Wed Jul 16, 2003 6:23 pm

I tend to watch that a little closer for the HenryJ.

It runs best (overdriven) on 115 octane fuel.

Unocals "Trick Racing Fuel" has a Research Octane of 115 , Motor Octane of 106 , the (R+M)/2 is listed as 110 and it is sold as 110 Octane racing fuel.

It keeps me checking the pumps to see if someone is selling "cheap" fuel under the Research Octane rating, trying to fool some of the uninformed

Rusty · Post by **Rusty** » Wed Jul 16, 2003 6:46 pm

Well, with the HenryJ, you have to. I've had a few cars that , while they weren't blown, had very high compression (13:1 in one of them) and were the same way. Had to be real careful with what you put in them. Over the last 10 years though, I've had mostly cars that would run on anything which has made me get lazy about octane, etc. My old VW is like that. You could almost drink a 6-pack and then, uh, well you get the idea. My CC is amazingly picky about gas though. Pour the cheap stuff in and it'll let ya know real fast. It doesn't ping (or at least you can't hear it) but it feels noticably sluggish.

quickbiker · Post by **quickbiker** » Wed Jul 16, 2003 6:59 pm

Mine has pinged on 87, and that was when I had stock tuning. But then I never had anything that ran right on 87, always gives me some kinda trouble. I like to stick with 93 mostly, sometimes 89. Unless it's a rental, then the cheap stuff all the way.

kgkoon · Post by **kgkoon** » Wed Jul 16, 2003 7:35 pm

I've been using 89. Got a free fill up at the dealer and it was 87; the difference was notable. It runs a lot better with the 89.

a2b · Post by **a2b** » Wed Jul 16, 2003 11:17 pm

i put 87 in everytime. i will have to try something new. GM claims that they only want their customers using 87 in all their motors

quickbiker · Post by **quickbiker** » Thu Jul 17, 2003 3:32 am

a2b wrote:i put 87 in everytime. i will have to try something new. GM claims that they only want their customers using 87 in all their motors

That cause so when your vehicle is out of warranty, you will have to buy new injectors.

TNC · Post by **TNC** » Sun Jul 20, 2003 10:45 pm

quickbiker wrote:
a2b wrote:i put 87 in everytime. i will have to try something new. GM claims that they only want their customers using 87 in all their motors

That cause so when your vehicle is out of warranty, you will have to buy new injectors.

Don't forget about the fuel pump and sender units