What Type Of Gas to Use

[FairyDust]

I had someone saying that you don't need to be premium gas into the eclipse.

I have a 01 GT V6 and I do put premium gas into my car because I think its better for the car than regular unleaded. But my friend says I'm wasting my money and that regular unleaded won't affect the performance of my car. Is he right or wrong?

[3000-GTO]

Originally Posted by FairyDust

I had someone saying that you don't need to be premium gas into the eclipse.

I have a 01 GT V6 and I do put premium gas into my car because I think its better for the car than regular unleaded. But my friend says I'm wasting my money and that regular unleaded won't affect the performance of my car. Is he right or wrong?

Your friend is right you do not need to put premium into your car. I don`t think the compression of your car`s engine is high enough to need it. It wont hurt your car of course but your wasting your money. It will say in your owners manual and on your dash if you need to put premuim in your car otherwise though just stick to regular unleaded. The only way you will need premium in your car is if you turbo charge it or something.

[rodbls]

Originally Posted by FairyDust

I had someone saying that you don't need to be premium gas into the eclipse.

I have a 01 GT V6 and I do put premium gas into my car because I think its better for the car than regular unleaded. But my friend says I'm wasting my money and that regular unleaded won't affect the performance of my car. Is he right or wrong?

This is true for certain cars, even the same model. Some cars of the same model react differently to octane levels, as well as ethenol. The rule of thumb that I usually use is that the first tank of gas should be consistant to all the others you put in it. If the first tank was premium, i would generally put premium in it. My car does not like ethanol, not the 87 octain regular. It gargles and lugs in first gear. Not saying that all eclipses are like this, but thats my 2 cents.

[FairyDust]

My Manual says 89 or higher and it also says it inside the gas tank door. Thats why I figured it needed premium and why I disagreed with my friend, because the manual and the car says otherwise.

[3000-GTO]

Originally Posted by FairyDust

My Manual says 89 or higher and it also says it inside the gas tank door. Thats why I figured it needed premium and why I disagreed with my friend, because the manual and the car says otherwise.

Well if it says 89 or higher just put 89 in then it`s cheaper than the 92 octane by a little putting higher octane than 89 is going to probably be pointless unless you have suped your car a lot. All octane does is just prevent the fuel from exploding to soon so if your cars stock and it says 89 obviously 89 will work efficently. Although you can still stick in 87 and the ECU should adjust automaticly to this fuel.

[Vtec95Civic]

I'd say if Mitsubishi recommends 89 (which it does for the GT, 87 for GS and RS).. then I would use 89.

[FairyDust]

ok, now another question. I generally put 89 in, but sometimes the gas stations won't have it. I dunno why, so I wind up putting in 92 (I think thats the number), because its either that or run out of gas or put in 87. It doesn't really make a difference if I change the type of gas every once in a while because of that does it?

And my car isn't all done up or anything either. Just got it a couple months ago so pretty much everything on it is still stock.

[eclipsed4utoo]

tell me what you save by putting 87 octane in a car that suppose to use 89 or higher. you will pay about 10 cent more for a gallon. if you put 15 gallons of 87 octane in your car, you just saved $1.50. now the ecu will retard the timing and cause your engine to start knocking. so when you engine starts knocking, you can blame your friend for it. why not put in it what is recommended for your car?

[Sleepr awd]

actually if you'll look in the owner's manual, it says that you should use 91 (R+M) something gas and if it isn't R+M then 93 R or something like that, it is recommended b/t 91 and 95 no lower, no higher, if you go lower in some cars it will cause it to backfire while decelerating
it says 89 is only ok IF there is nothing else, once or twice won't hurt, but you should have 91...

at least thats the 2003 manual

[Vtec95Civic]

Recommended Fuel: Premium Unleaded (for 2005 GT and GTS)

http://www.mitsubishicars.com/MMSA/j...p?t=mechanical

At the bottom.

[gotti123]

oh man ive used 89 in my gt all the time, i really dont think it makes a difference

[FairyDust]

ok ya its 91. I couldn't remember the number when I was posting. I'm a natural blonde, so don't forget that when I say something stupid lol. But basically I've been putting in what the manual says (91) or higher if thats not available. But I've had a couple times where there isn't that level available and no choice, unless I wanna walk lol.

and ya what eclipsed4utoo was saying about the $1.50 difference compared to problems in the future b/c your skimping on the gas doesn't make much sense. And I know my friend ain't gonna pay for my car when it starts having problems either.

I was just wondering if it was really true that you had to put what they say or if he was right.

Doesn't the premium also burn cleaner or whatever?

[Eclipse66]

I am going to keep putting in premium in my 2003 Gt. If you add up the difference in cents per gallon it really isn't that much more. So I am going to do what the manufacture suggests.

[FairyDust]

ya me too, can't hurt anything.

[Sleepr awd]

i have octane boost when i don't have anything higher than 87 octane