View Poll Results: Fuel Type?
Regular
26
12.32%
Midgrade
25
11.85%
Premium
160
75.83%
Voters: 211. You may not vote on this poll
The Mother of all LS430 Fuel Threads: Regular, Midgrade, or Premium? (merged)
Joined: Feb 2001
Posts: 31,944
Likes: 2,738
From: North Carolina
Originally posted by ranjankhan
ya, tried searching, but mostly debates, no majority conclusions. Mostly accept GS is not a good gas car, and premium grade gas is a waste.
My other question I am trying to research is how the LS430 gets such better mileage than the GS? I also notice that my car won't 'go' in low gears, unless my foot is on the gas, whereas the LS cruises to a stop, mine is almost fighting to go to the next gear, I guess cause the GS takes advantage of higher RPM to be such a fast car.
ya, tried searching, but mostly debates, no majority conclusions. Mostly accept GS is not a good gas car, and premium grade gas is a waste.
My other question I am trying to research is how the LS430 gets such better mileage than the GS? I also notice that my car won't 'go' in low gears, unless my foot is on the gas, whereas the LS cruises to a stop, mine is almost fighting to go to the next gear, I guess cause the GS takes advantage of higher RPM to be such a fast car.
.Are you comparing your GS400 to your parent's LS430 or some other LS? If you're comparing the GS400 to LS430 they are two different engine versions 1uz vs 3uz.
Interesting that GS430 mileage is 18/23 vs LS430 18/25. I'd suspect gearing in the GS might be taller/more aggressive impacting the highway rating.
Joined: Feb 2001
Posts: 31,944
Likes: 2,738
From: North Carolina
Originally posted by ranjankhan
sorry, 1uz vs 3uz, uz?
Comparing what I know, my 98 GS4 vs his '01 LS430, sick 1 tank of gas to Canada.
And by premium, do you mean 89, or 91+?
sorry, 1uz vs 3uz, uz?
Comparing what I know, my 98 GS4 vs his '01 LS430, sick 1 tank of gas to Canada.
And by premium, do you mean 89, or 91+?
Premium is 91+ (depends on your geographic area), not mid grade 89
Intermediate
Joined: Oct 2001
Posts: 404
Likes: 8
From: ca
SO BASICALLY?
SO BREAK IT DOWN TO ME I CAN USE 87 IN MY LS400? AND IT WONT HARM NOTHING RIGHT? ITS NOT ABOUT BEING CHEAP.. I DONT DRIVE THE CAR MUCH.. SO NO NEED FOR 91 AND PLUS I DONT EVEN TRY TO RACE OR FULLY THROTTLE THE CAR 
Pole Position
Joined: Jul 2003
Posts: 370
Likes: 1
From: Pennsylvania
no offence man but ur not driving a ford focus here? 87oct/ 89oct???? come on man ur driving a ls430 its what a WHOLE wopping 3 dollars more for a fillup? 
i have a 90 ls400 and i NEVER use anything less then 93octane yeah i guess it sucks using premium but i knew that before i bought the car so i dont even notice really.
JUST USE 93 u can afford it if u have a 03 ls430 u can cough up the extra 3$ per fillup
i have a 90 ls400 and i NEVER use anything less then 93octane yeah i guess it sucks using premium but i knew that before i bought the car so i dont even notice really.
JUST USE 93 u can afford it if u have a 03 ls430 u can cough up the extra 3$ per fillup
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Lead Lap
Joined: May 2002
Posts: 770
Likes: 2
From: Massachusetts
this is pretty stupid. where I live the difference between 91 and 93 octane is usually 2 cents. most often i am putting around 16 or 18 gallons in my tank, 2 times a month. there is no reason to put less than 91 octane in the car. you bought a 60 thousand dollar car and are trying to save 2 dollars per fill up you arent just cheap. youre not very smart. 87 octane is insane and the 14 cents a gallon difference between 89 and 91 octane is about 1.40 the way you fill up. jeez.
Originally Posted by digital_b
this is pretty stupid. where I live the difference between 91 and 93 octane is usually 2 cents. most often i am putting around 16 or 18 gallons in my tank, 2 times a month. there is no reason to put less than 91 octane in the car. you bought a 60 thousand dollar car and are trying to save 2 dollars per fill up you arent just cheap. youre not very smart. 87 octane is insane and the 14 cents a gallon difference between 89 and 91 octane is about 1.40 the way you fill up. jeez.
I dont mean to crack on daryll40, because he was just asking a question.
Last edited by GRAND_LS 4; Dec 26, 2004 at 02:44 AM.
Driver
Joined: Nov 2003
Posts: 126
Likes: 1
From: Washington
Guys, get over yourselves. I used to live in the UK where gas prices now top out at over four pounds a gallon:-
http://www.theaa.com/allaboutcars/fuel/
That works out at $8 a gallon. To fill up an LS430 that would be almost $200.
Here's a direct comparison:-
http://www.theaa.com/allaboutcars/fuel/motfue001.html
UK pays 90.3 pence per liter, US is 28 pence per liter.
LS430 is $120,000 equivalent there too.
How do you feel now?
http://www.theaa.com/allaboutcars/fuel/
That works out at $8 a gallon. To fill up an LS430 that would be almost $200.
Here's a direct comparison:-
http://www.theaa.com/allaboutcars/fuel/motfue001.html
UK pays 90.3 pence per liter, US is 28 pence per liter.
LS430 is $120,000 equivalent there too.
How do you feel now?
Here are the mileage figures for mine with the different grades in a best case scenario:
91- 28 MPG
89- 24 MPG
87- 21 MPG
This was done on several trips over the same stretch of 5 FWY running the length of CA. The price is relative to what I got in perfomance and mileage. On that 2K trip, the difference adds up. Stopping to get gas at an isolated station where the prices are jacked, it is nice to just keep on driving.
91- 28 MPG
89- 24 MPG
87- 21 MPG
This was done on several trips over the same stretch of 5 FWY running the length of CA. The price is relative to what I got in perfomance and mileage. On that 2K trip, the difference adds up. Stopping to get gas at an isolated station where the prices are jacked, it is nice to just keep on driving.
hey guys, easy.... the guy was asking a question, you may disagree with him (i do), but you can put it nicely...
imho, i wouldn't even consider 89. if you do the math, between 89 and 91, maybe you end up paying about 100 to 150 bucks more each year... i think that's insignificant enough, considering that you paid like 60k for the car
imho, i wouldn't even consider 89. if you do the math, between 89 and 91, maybe you end up paying about 100 to 150 bucks more each year... i think that's insignificant enough, considering that you paid like 60k for the car
Driver School Candidate
Joined: Aug 2003
Posts: 13
Likes: 0
From: California
Personally, I don't want to spend unnecessary money on gasoline, but I still put in premium every single time.
Why? Well, in the unlikely event that the knock sensor fails, I don't want detonation occuring in my engine. Sure, it will retard timing when it is working properly, but what if it doesn't? The cost of the higher grade gasoline is not all that more expensive, and I like to think I am buying a little cheap insurance with each fillup.
Plus, premium gasoline has more detergents, which should help keep the engine cleaner.
On a less serious note, removing the hood and rear doors would probably be detrimental to the fuel economy. It would cause more drag. I suggest replacing the hood with one made of carbon fiber. Then stripping out the passenger seat and the rear seat. Furthermore, I believe that you may want to consider tossing out the door mats, removing the interior panels, stripping out the insulation, and ripping out all of the carpeting. Replacing the driver seat with a race seat might also cut a few pounds.
Why? Well, in the unlikely event that the knock sensor fails, I don't want detonation occuring in my engine. Sure, it will retard timing when it is working properly, but what if it doesn't? The cost of the higher grade gasoline is not all that more expensive, and I like to think I am buying a little cheap insurance with each fillup.
Plus, premium gasoline has more detergents, which should help keep the engine cleaner.
On a less serious note, removing the hood and rear doors would probably be detrimental to the fuel economy. It would cause more drag. I suggest replacing the hood with one made of carbon fiber. Then stripping out the passenger seat and the rear seat. Furthermore, I believe that you may want to consider tossing out the door mats, removing the interior panels, stripping out the insulation, and ripping out all of the carpeting. Replacing the driver seat with a race seat might also cut a few pounds.