Premium versus Regular gas
Thread Starter
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Joined: Jun 2004
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From: Missouri
Premium versus Regular gas
Lexus Champion
Joined: Jan 2004
Posts: 1,784
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From: California
I'm not quite sure on this one. If my car asks for premium, then I'm gonna have to put premium in it. My friend's sister had a 2000 celica gt-s and the car asks for premium so so put premium in it for awhile until she decided to go 89 octane to save a few bucks. Well, a few days later her check engine light came on and the dealer told her it was the gas she put in the car. They said only premium!! They drained her tank and refilled it w/ 91 octane and told her if she does it again, it can avoid her warranty.
Driver School Candidate
Joined: Jun 2004
Posts: 18
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From: California
Here we go again. Another self appointed BITOG automotive expert (PitBull) has convinced himself, through his internet based "automotive education" that he knows more about his Toyota/Lexus than those engineers who desiged and built it and is qualified to alter their specifications based on his experience.
He then posts bogus info supporting his position.
Pitbull, one of these days you'll get it. You don't know more about your car than those who designed and built it.
Chumley
He then posts bogus info supporting his position.
Pitbull, one of these days you'll get it. You don't know more about your car than those who designed and built it.
Chumley
You can use OBDII to reset the 'check engine' light. Did your sister tell them she used 89 or did they figure that out from sniffing the gas 
? There are all kinds of things that can set off the CE light, ie loose gas cap. Sounds like they were lazy to diagnose the problem. The manual also states the car can run on 87 when 91is not available, so she is not violating the warranty.
Here's something else interesting...
Land Cruiser, Sequoia, Tundra, LX(Land Cruiser) all use the same identical V8 - 2UZ engine
Camry V6 and ES300 also use the same identical V6 - 1MZ engine
Toyota recommends 87, but Lexus recommends 91
? There are all kinds of things that can set off the CE light, ie loose gas cap. Sounds like they were lazy to diagnose the problem. The manual also states the car can run on 87 when 91is not available, so she is not violating the warranty.Here's something else interesting...
Land Cruiser, Sequoia, Tundra, LX(Land Cruiser) all use the same identical V8 - 2UZ engine
Camry V6 and ES300 also use the same identical V6 - 1MZ engine
Toyota recommends 87, but Lexus recommends 91
Lexus Champion
Joined: Oct 2003
Posts: 3,350
Likes: 6
From: California
i used 89 in my car once, i heard it knock coming from a stop, then it went away. Our cars can adjust TEMPORARILY for low octane for say, you're out on I-5 and need gas, and regular is all they have. I woundn't run anything lower than 91 in most Lexus models besides the ES300 and the SUVs.
Lexus Champion
Joined: Oct 2003
Posts: 3,350
Likes: 6
From: California
Originally posted by ntran18
Here's something else interesting...
Land Cruiser, Sequoia, Tundra, LX(Land Cruiser) all use the same identical V8 - 2UZ engine
Camry V6 and ES300 also use the same identical V6 - 1MZ engine
Toyota recommends 87, but Lexus recommends 91
Here's something else interesting...
Land Cruiser, Sequoia, Tundra, LX(Land Cruiser) all use the same identical V8 - 2UZ engine
Camry V6 and ES300 also use the same identical V6 - 1MZ engine
Toyota recommends 87, but Lexus recommends 91
Thread Starter
Pole Position
Joined: Jun 2004
Posts: 376
Likes: 0
From: Missouri
Originally posted by Chumley
Here we go again. Another self appointed BITOG automotive expert (PitBull) has convinced himself, through his internet based "automotive education" that he knows more about his Toyota/Lexus than those engineers who desiged and built it and is qualified to alter their specifications based on his experience.
He then posts bogus info supporting his position.
Pitbull, one of these days you'll get it. You don't know more about your car than those who designed and built it.
Chumley
Here we go again. Another self appointed BITOG automotive expert (PitBull) has convinced himself, through his internet based "automotive education" that he knows more about his Toyota/Lexus than those engineers who desiged and built it and is qualified to alter their specifications based on his experience.
He then posts bogus info supporting his position.
Pitbull, one of these days you'll get it. You don't know more about your car than those who designed and built it.
Chumley
Hey Chumpley, it has already been proven in previous posts that you don't have a clue. You even got kicked off BITOG site because of your personal attacks on other members. When the BITOG members found out you were hiding over here, giving out bad information they came to this site and exposed you.
Now go bother someone else.
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Driver
Joined: Mar 2002
Posts: 1,800
Likes: 13
From: Maryland
NPR's (National Public Radio) Click and Clack, the tappet brothers, have discussed this on their web site and their opinion is that, if premium gasoline is called for by the manufacturer, using lower octane will cause the engine to run hotter, even after the engine computer adjusts the timing.
This could have adverse consequences, particularly when the engine is stressed with high outside temperatures and highspeed driving.
This could have adverse consequences, particularly when the engine is stressed with high outside temperatures and highspeed driving.
Lexus Champion
Joined: Jan 2003
Posts: 2,754
Likes: 6
From: Colorado
Originally posted by ntran18
Land Cruiser, Sequoia, Tundra, LX(Land Cruiser) all use the same identical V8 - 2UZ engine
Camry V6 and ES300 also use the same identical V6 - 1MZ engine
Toyota recommends 87, but Lexus recommends 91
Land Cruiser, Sequoia, Tundra, LX(Land Cruiser) all use the same identical V8 - 2UZ engine
Camry V6 and ES300 also use the same identical V6 - 1MZ engine
Toyota recommends 87, but Lexus recommends 91
Lexus Connoisseur
Joined: Mar 2001
Posts: 19,899
Likes: 612
From: USA
Originally posted by HarrierAWD
Overtime it will damage the engine.
Overtime it will damage the engine.
Last edited by flipside909; Jul 31, 2004 at 03:03 PM.
Lexus Champion
Joined: Jan 2004
Posts: 1,784
Likes: 1
From: California
Originally posted by ntran18
You can use OBDII to reset the 'check engine' light. Did your sister tell them she used 89 or did they figure that out from sniffing the gas ? There are all kinds of things that can set off the CE light, ie loose gas cap. Sounds like they were lazy to diagnose the problem. The manual also states the car can run on 87 when 91is not available, so she is not violating the warranty.
Here's something else interesting...
Land Cruiser, Sequoia, Tundra, LX(Land Cruiser) all use the same identical V8 - 2UZ engine
Camry V6 and ES300 also use the same identical V6 - 1MZ engine
Toyota recommends 87, but Lexus recommends 91
You can use OBDII to reset the 'check engine' light. Did your sister tell them she used 89 or did they figure that out from sniffing the gas
? There are all kinds of things that can set off the CE light, ie loose gas cap. Sounds like they were lazy to diagnose the problem. The manual also states the car can run on 87 when 91is not available, so she is not violating the warranty.Here's something else interesting...
Land Cruiser, Sequoia, Tundra, LX(Land Cruiser) all use the same identical V8 - 2UZ engine
Camry V6 and ES300 also use the same identical V6 - 1MZ engine
Toyota recommends 87, but Lexus recommends 91
Thread Starter
Pole Position
Joined: Jun 2004
Posts: 376
Likes: 0
From: Missouri
""I go back and forth, and I'm hard-pressed to notice" whether there's regular or premium in the tank, says Jeff Jetter, principal chemist at Honda Research and Development Americas. He drives an Acura designed for premium.
Import brands, especially, use premium fuel to distinguish their upmarket models. Most Toyotas, for instance, are designed to run on regular or midgrade, while the automaker's Lexus luxury brand prefers premium. Same with Honda and its Acura luxury line.
"Generally, the more expensive the vehicle, the higher the expectation for performance and the more the customer is willing to pay for fuel," says Pete Haidos, head of product planning for Nissan in the USA."
My Toyota 4runner with the same engine, same rated HP/TQ as the GX470 and the LX470 is rated to run on 87 octane. Even recommended by the dealer. The owners manual does state that it operates on 87 but for better performance use 91 octane. Now my 350Z operates on 91 octane and the owners manual states to use 91 octane or higher. I run 87 in the 4runner and 91 in the Z.
I posted the attached thread because I thought it might enlighten some people and stir some interesting discussion.
Import brands, especially, use premium fuel to distinguish their upmarket models. Most Toyotas, for instance, are designed to run on regular or midgrade, while the automaker's Lexus luxury brand prefers premium. Same with Honda and its Acura luxury line.
"Generally, the more expensive the vehicle, the higher the expectation for performance and the more the customer is willing to pay for fuel," says Pete Haidos, head of product planning for Nissan in the USA."
My Toyota 4runner with the same engine, same rated HP/TQ as the GX470 and the LX470 is rated to run on 87 octane. Even recommended by the dealer. The owners manual does state that it operates on 87 but for better performance use 91 octane. Now my 350Z operates on 91 octane and the owners manual states to use 91 octane or higher. I run 87 in the 4runner and 91 in the Z.
I posted the attached thread because I thought it might enlighten some people and stir some interesting discussion.
Pole Position
Joined: Apr 2004
Posts: 227
Likes: 0
From: California
Re: Premium versus Regular gas
Originally posted by PitBull
[B]Good information, might save you some $$$ ]
[B]Good information, might save you some $$$ ]
Lexus Champion
Joined: Oct 2003
Posts: 3,350
Likes: 6
From: California
Re: Re: Premium versus Regular gas
Originally posted by saber
I gather that with all the money saved by using regular gas in place of premium, the Lexus could then afford to buy all kinds of premium car care products like Auto-Rx, Fuel Power, Lube Control, RedLine Water Wetter, an oil filter bypass system, K&N air filter, Schaeffers Neutra 131, plus many years of monthly analysis of the engine oil, power steering fluid, transmission fluid, brake fluid and differential fluid by both Blackstone Labs and Dyson Labs. Right?
I gather that with all the money saved by using regular gas in place of premium, the Lexus could then afford to buy all kinds of premium car care products like Auto-Rx, Fuel Power, Lube Control, RedLine Water Wetter, an oil filter bypass system, K&N air filter, Schaeffers Neutra 131, plus many years of monthly analysis of the engine oil, power steering fluid, transmission fluid, brake fluid and differential fluid by both Blackstone Labs and Dyson Labs. Right?
