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With gas prices sky rocketing, I've been filling up the Galant with 89 octane, instead of 91, from either Shell or Chevron gas. I've noticed and improvement in accelaration and also mpg when cruising. Anyone else notice this? Does the Galant really require 91 octane or is 89 just fine? Thanks.
I record my gas miliage and on 91 I get just at 290miles per tank. When I would fill up with 87 I get at around 275. Also my car sounds different and shakes more with 87.
Do you have a V6?
v6 w/ 89 octane = FaiL :)
that means i super fail then.
v6 w/87 octane.
I find it works much nicer with 93 octane.
Yes and it's an auto.Quote:
Originally Posted by VegasMatt
I always use the 91 octane with the V6. I worry about knock in using the 89 like I did when I had my Mazda.
We don't get 93 octane in California, so the highest available is 91. I use to fill up with 91 octane, but I switched to 89 octane and I'm noticing improved acceleration. Maybe it's just my imagination, or the cooler weather we're having. I also run my tires (195/65/15) @ 40psi each.Quote:
Originally Posted by RedGalant2k1
WTF. 40 psi on the tires......
Thats pretty damn gay man.
Your engine will run on 89 octane. Its going to have some retarded timing maps though. your engine will not be extracting as much power out of the fuel. Just remember that the knock you get from running lower octane fuels..... will slowly but surely flatten out your rod bearings, and cause premature wear.
i use 91 or 93 octane. usually 93 unless i don't have a chance to get to BP or Shell
for v6 8G 91>89. 89 giving better performance=imagination.
I have a v6. Is there a store that sells 93 or is it you have to look?
91/93 for my galant..
And that's why I won't use anything less than 93 Octane in my Galant. And what makes you think 40 psi in your tires saves gas??Quote:
Originally Posted by DOHCstunr
LOL!!!! wow...Quote:
Originally Posted by cg1349
with gas prices sky rocketing blah blah blah.... yes, they are extremely high, and i dont know how many times i have to type this out just on TGC alone... but look at it this way.
example - youre filling up on 10 gallons of 89 @ 3.50 a gallon. 35 bucks.
example - youre filling up on 10 gallons of 92 @ 3.70 a gallon. 37 bucks.
are you seriously telling me that you cant afford two extra bucks? you might spend that now, but how much are you going to spend on repairs after running shitty gas.
our 8Gs with V6s will start to knock like a mofo after 89 is used for too long.
moral of the story - spend a few extra bucks now, or save all of those precious pennies for parts and labor later. your choice.
bp, shell, and prolly a few othersQuote:
Originally Posted by wittydrewy
when you guys say you get 290 per tank, how many gallons is it when you fill back up. ive been getting barely 225 still. i got ONE record take of like 270ish but that was right after i used a really good fuel injector. i really need a tune up
my 270ish was 12.5-13 gallons i believe
I use 89 on my i4, good enough for me.
i have 93 octane where i live at practally every single place
u don't need to, u can run 87 in ur i4 w/ no ill effects.Quote:
Originally Posted by hellk4t
i can easily get in the 290-300 range on 12-13 gal.Quote:
Originally Posted by 99 galant
wtf. my v6 hardly gets 225 IF that on 12-13 gallons.
fuck this im paying for the tune up and soon.
Knock Knock...on the engine.
damn i thought i was getting OKAY gas mileage on my 4banger G. Im clearing out 320 a tank and Ive hit 350 with mostly highway driving and with 87 octane. I dont feel so bad now.
40 psi is too high for that tire btw. your tires are going to wear abnormally. shouldn't be 32-34psi?
3.50/gal and 3.70/gal....man i wish we saw those prices. more like 3.89 for 87 3.99 for 89 and 4.09 for 91. I swear Cali has the worst gas prices...almost cost 50 bucks to fill my tank now.....
how can anyone run there car on 87 or 89? if i even tried to run mine on 91 itd probably die lol
98 all the way...
98? Holy crap!
The most we have in Montreal so far that I've found is 94.
must be nice to have that high of octane...
i know my dad used to run basic unleaded in the car, but ever since i've had it, i've run 91/93
when i was in toronto, the highest i ever found was 91Quote:
Originally Posted by komodo
91 is really common in Canada.Quote:
Originally Posted by fliegendaffe
Petro Canada has 94 octane..
I'm not sure about Sunoco, though. We have Shell V-Power with 91 octane though I think.
yes, your shell v-power was 91 vs the states 93Quote:
Originally Posted by komodo
89 octane for me
ok guys here how it works. if u are NOT FI in your USDM 8G I4, then just put in 87; 89 and 91 is a waste of money for u since it will not make your car work any better. if you have a USDM 8G V6, then u need to put in 91 (that's why there's a sticker on your fuel door that says "PREMIUM ONLY" ; 89 and 87 will "work" but your car will have to adjust timing to avoid detonation and will not run as well... detonation is VERY bad for the engine.
yeah!me too,i get better accelaration and mileage with 89, though i just have a I4
Word? I can save some cash then I guess.Quote:
Originally Posted by Reelax
At 35psi, the car feels sluggish. There is more friction between the tires and the pavement, which causes the engine to work harder to spin the wheels. This uses up more gas. In terms of wear abnormally, the tires are rotated every 6,000 miles. I did the same on the tires on my Sentra, and they lasted for 42,000 miles. The were designed to last for only 36,000 miles. More air = better mpg and longer tire life.Quote:
Originally Posted by dronesurfboards
it's all in your mind. the only way 89 would be benifical in the i4 would be if you were running heavy engine mods: FI or high compression, otherwise it's a waste. the number rating represents resistance to detonation, not power in the fuel. the i4 doesn't need to run any higher than 87.Quote:
Originally Posted by xcore
is ur car GDI? if it is u need to run that high octane as they perform like crap on our lower octane rated fuels... in the US we don't have anything over 93 readily available (of course we do have some stations w/ 105+ racing fuel). our enignes are 2.3 SOHC EFI and 3.0 SOHC EFI so we can run the lower octane fuel that is available here... if needed there is always octane boost addative.Quote:
Originally Posted by icweirdppl
same here.. 140K and still running strong!Quote:
Originally Posted by hellk4t
I run 89 in my V6 Car. I get around 24-24.5 mpg city highway mix. I get about 340-350 miles per tank. I got the same mpg running 93. I ran 87 before and it lowered my mpg. Also you could feel the car pull timing. When you look at the gas pump you should note that the octain rating shown is the minimum octain(It could be higher). I don't recommend putting 89 in anyones cars but this is what I've notice.
2003 Galant GTZ