anybody actually do a back to back test with premium vs regular gas to see it the mpg is higher with the premium?
premium vs regular/mpg
berge
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when i first got my legend, yes sorry to say but i did put unleaded normal 86 octane in for about 3 weeks. a gas tank a week is usually what i go through in a week. I do like to drive my legend a little on the rough side. not like going over bumps or over road crap.. but starting off i usually don't just slowly accelerate. i get up to speed relativly fast. then i started to put premium, (93 octane) and i could totally tell a difference. my tanks were lasting longer.. not too much but enough to notice. I don't want to say an exact number, kinda scared to be laughed at.. but i was to say from like 20-40 miles more. maybe less... there is my story. i don't know the physics about premuim vs regular, except i think the burning temp is different. but there is a common newbie story for ya. haha
I did test this on my Toyota Highlander 2002 model several times and got about 1 mpg more when using the premium gas, but no way would it justify paying 40cents/gal more for premium. Performance was not different in terms of acceleration or pinging etc. The Toyota has an intelligent valve system (3.0L V6). When I did this on the Legend I found the Legend to be more affected in terms of performance, when using regular vs. Premium. It was noticable, even tho the knock sensors prevented damage from knocking or pinging. So, I mostly burned premium.
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I used regular the last tank b4 this one and the next morning the car had a very hard start...it took three tries...This never happened b4..I immediately got a hold of Chevron/Techtron and on the second fill up went back to 93 and it never happened again...
Dee
Dee
From what I understand, premium has a higher compression so it will output more power when it burns. More power means less gas needed to get your car up and running; most affective during stop and go. I believe thats why most people who switch from regular to premium will notice better gas mileage. I've always used premium in my Legend so I can't say personally. But before my Legend, I did own a Camry; being as weak as the thing was, I did notice a difference when I switched to premium. - my $00.02
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77 Posts
I've noticed in my '92 Legend that the premium gas (91 or higher) does much better with acceleration than when I had a few tankfulls of regular (87 octane) gas. Didn't notice much mileage difference...like others said, it may be a touch better with premium, but not worth the extra dollars. If you like the "peppiness" in a Legend, use the premium gas, or at least use it every other tankfull to keep things going well.
As always, use good name gasoline, use some fuel injector cleaner every 5,000 miles and change your fuel filter on a regular (scheduled) basis.
I have a 2002 Acura TL, but don't notice a difference in premium vs. regular gas...so I stick with the regular gas on that vehicle....at least for now.
As always, use good name gasoline, use some fuel injector cleaner every 5,000 miles and change your fuel filter on a regular (scheduled) basis.
I have a 2002 Acura TL, but don't notice a difference in premium vs. regular gas...so I stick with the regular gas on that vehicle....at least for now.
Quite honestly, unless you measure actual miles driven and divide by gallons, everything else is a guess. On top of that, the experts will tell you that measuring the mpg using only one tankful is not very accurate. You need to do several tank fulls and average them together. Then you will an accurate assessment of gas mileage.
I routinely use regular gas in my 93 legend and the car runs quite well and with normal pep.
Gary
I routinely use regular gas in my 93 legend and the car runs quite well and with normal pep.
Gary
G
Guest
·Recently with the new shell premium gas, the "V-power" stuff, I get a consistant extra 20-40 miles on a tank...
That's sad. I have often kept from responding to a thread due to the probability of be flamed. There is constant flaming that goes on in this forum. There's a bunch of nice guys here, but there's also some real a$$holes.Phireant said:
FWIW, my car does exactly the same on 87 or 93.
the reason I asked is because I recently started driving the legend daily because we got a van for the wife. we were putting regular in it all the time and because I have a bit of a leadfoot compared to my wife, I'm putting premium in it.
bottom line. I don't feel any difference in engine smoothness, idle, acceleration, hot/cold starts, at all. The mileage, however, has definitely gone up and I can't figure out why because the car does have knock sensors.
how is premium gas getting me better mpg?
thanks all for the replies. This is a great forum.
bottom line. I don't feel any difference in engine smoothness, idle, acceleration, hot/cold starts, at all. The mileage, however, has definitely gone up and I can't figure out why because the car does have knock sensors.
how is premium gas getting me better mpg?
thanks all for the replies. This is a great forum.
Same here, my legend is so sluggish with 87; harder to peel out
But when I put v-power, i can definitely feel more pull.
Ok, so the big question.
Which is more cost efficient and milage efficient?
$10 worth of 87
$10 worth of 93
I should experiment on this....
But when I put v-power, i can definitely feel more pull.
Ok, so the big question.
Which is more cost efficient and milage efficient?
$10 worth of 87
$10 worth of 93
I should experiment on this....
Berge, the premium fuel has a higher octane rating than regular, which means it actually burns slower and more controlled with less likeliness to explode prematurely. This means the engine timing can be advanced a bit more than if running with regular. This make the engine more fuel efficient and gives it greater pep. When regular gas burns too fast you may get pinging or detonation, so the computer retards the spark advance to compensate and you loose some efficiency and power from the engine. The engine will run fine on regular and the guys that are satisfied with the performance on regular don't care about increase in peppiness. Your driving style may have a lot to do with what you feel. With gentle acceleration you won't see a difference between regular and premium, but if you gun it you will!
Premium will burn a little longer. But like many have mentioned abrove it's not worth the money. When you put 93 octane in your car. Do you really know it's really 93 octane? Truth is that you don't know for sure. The best gas station to buy gas is Citgo. I don't know if anyone notice this, but Citgo supplies gas to most airports. I don't know about you, if a company that's good enough to be use in airplanes. It's good enough to be use in my car.
The only way to get better gas milage is to install a vaccum gauge in your car. Monitor you car engine vaccum. Normal car vaccum are around 18-21 in of Hg. When ever your car get below 18 of vaccum. Your car start to dump 30% more fuel into it's cylinders.
To get good performance and good milage is difficult, almost impossible.
The only way to get better gas milage is to install a vaccum gauge in your car. Monitor you car engine vaccum. Normal car vaccum are around 18-21 in of Hg. When ever your car get below 18 of vaccum. Your car start to dump 30% more fuel into it's cylinders.
To get good performance and good milage is difficult, almost impossible.
This doesn't mean that Citgo have supperior gas than most gas station because any airport could contract a company to supply their fuel for their planes. Actually, the lowest bidder usually wins the contract. The gas that they put on airplanes are different from the one you can pump out of your local gas station, jet fuels contains high octane. Just look at 76, they provide gas in NASCAR. Also, all the fuel in your local area comes from one distribution area from the refinery that serves your region. The only different from one gas brand to another is the additive that the fuel company uses. e.g. Shell uses V-Power (that's what they call), Chevron uses Techron, etc. From my experience, Shell, Chevron, Mobil and 76 have excellent additives. Arco is cheap but I have some car fueled with their premium and sucks a lot of gas.Jigoku Z said:
You're welcome. Keep in mind this is on a TL, stock we have a Type I engine with a 4 speed tranny with the same gear ratios as on an RL. Car weighs around 3450 pounds, so slightly less than a Legend LS.
EPA lists the car as being 18 mpg City / 24 mpg Highway
Regardless, I have proven with that premium gas gives me better gas mileage in a C32 engine.
EPA lists the car as being 18 mpg City / 24 mpg Highway
Regardless, I have proven with that premium gas gives me better gas mileage in a C32 engine.
lol... Of course, Jet engines and car engines use different type of fuel..blitz said:
I only used it as an example. The fact is Citgo is better. So you saying airlanes will risk putting crapping fuel in their airplanes only because they're the "lowest bidder".1 - 18 of 18 Posts
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