Go Back   Club Lexus Forums > Lexus Model Forums > GX Models > GX - Second Generation
Sign in using an external account
Register Forgot Password?

Premium Gas vs. Regular

Reply
 
 
 
 
Thread Tools Search this Thread Display Modes
Old 07-01-10, 07:49 PM   #1
pierpark
Driver School Candidate
Trader Score: (0)
 
Join Date: May 2010
Location: VA
Posts: 28
Default Premium Gas vs. Regular

I have a 2005 GX and it takes regular gas. I just picked up the 2010 GX today and noticed that it said to use premium only. Anyone using less than premium?

Thanks!
This ad is not displayed to registered members.
Register your free account today and become a member on Club Lexus!
pierpark is offline   Reply With Quote
Old 07-01-10, 09:32 PM   #2
Luke27617
Lead Lap
Trader Score: (2)
 
Luke27617's Avatar
 
Join Date: Oct 2009
Location: NC
Posts: 611
Default

Quote:
Originally Posted by pierpark View Post
I have a 2005 GX and it takes regular gas. I just picked up the 2010 GX today and noticed that it said to use premium only. Anyone using less than premium?

Thanks!
Probably you can, but would you risk it when the cost difference is less than 10%. With amount of gas the truck uses you will have to take an additional loan anyway to be able to drive it. My millage is terrible
Luke27617 is offline   Reply With Quote
Old 07-01-10, 09:53 PM   #3
del3180
Rookie
Trader Score: (0)
 
del3180's Avatar
 
Join Date: Jun 2010
Location: California
Posts: 74
Default

This article makes the most sense out of what's out there.
http://www99.epinions.com/content_2346164356
del3180 is offline   Reply With Quote
Old 07-02-10, 09:27 AM   #4
alsilverbullet
Lexus Test Driver
Trader Score: (0)
 
alsilverbullet's Avatar
 
Join Date: Jul 2002
Location: South Florida
Posts: 1,169
Default

I only use premium! For me it is piece of mind knowing that my truck is running on the good stuff
__________________

2014 Lexus LS F Sport|
1989 Built 1-JZ Toyota Supra Turbo |604rwhp|498Trq @ 25psi on 93 pump|Loaded|[/FONT]
2011 Scion XB |Loaded|
alsilverbullet is offline   Reply With Quote
Old 07-02-10, 10:12 AM   #5
pierpark
Driver School Candidate
Trader Score: (0)
 
Join Date: May 2010
Location: VA
Posts: 28
Default Thanks!!

Thanks for the feedback. I was just surprised when I popped open the tank and saw premium after loving 5 years of regular. I agree it is piece of mind to use the premium.
pierpark is offline   Reply With Quote
Old 07-02-10, 07:07 PM   #6
ybing
Pole Position
Trader Score: (0)
 
Join Date: Mar 2006
Location: NV
Posts: 278
Default

Quote:
Originally Posted by pierpark View Post
I have a 2005 GX and it takes regular gas. I just picked up the 2010 GX today and noticed that it said to use premium only. Anyone using less than premium?

Thanks!
I believe all Lexus from 2000 use premium... so far as I know... but car runs on premium can take regular too, just not good to the engine for long term and have less power and low performance
__________________
'14 IS350 Ultra White/Rioja Red (Nov 15, 2013 - )
'13 IS250 Nebula Gray/Saddle & Black (Apr 08, 2013 - Nov 15, 2013)
'10 GX460 Starfire Pearl/Black (Mar 12, 2010 - Apr 08, 2013)
'06 IS350 Blue Onyx/Cashmere (Feb 28, 2006 - Feb 28, 2010)

ybing is offline   Reply With Quote
Old 07-20-10, 02:16 AM   #7
action
Driver
Trader Score: (0)
 
Join Date: Jun 2010
Location: bc
Posts: 119
Default

im kinda trolling in the GX forums haha but also keep in mind you'll get more mpg out of premium than regular... reason being regular contains ethanol to reduce emissions. Ethanol doesnt burn as efficiently as gas, so it burns more going 1mile than it would burn gasoline. Premium fuels dont have ethanol. Well at least this is how it is in canada, not sure if the premiums have ethanol down in the states or not.
__________________
http://www.jacksonzhao.com/blog
action is offline   Reply With Quote
Old 07-20-10, 04:21 AM   #8
dgsvt
Driver
Trader Score: (0)
 
Join Date: Apr 2007
Location: NJ
Posts: 186
Default

I just read that the 2011 ES350 will be rated for regular fuel. The hp/tq numbers quoted were the same as for the Toyota Camry motor. I wonder if other Lexus models will do the same.
dgsvt is offline   Reply With Quote
Old 07-20-10, 06:23 AM   #9
Luke27617
Lead Lap
Trader Score: (2)
 
Luke27617's Avatar
 
Join Date: Oct 2009
Location: NC
Posts: 611
Default

Let me start by saying that I am using Premium gas for piece of mind. Price difference is too small and I needed to take 2nd morgage on my car anyway to be able to drive since the millage is terrible

To add to the conversation and a little Toyota/Lexus conspiracy.

I think that you can drive without any problems on a regular gas, but the miles/gallon will drop a small %. Toyota/Lexus to increase the CAFE reported to the Federal Government, have started to require the Premium gas to report a better fuel efficiency. The is the same reason why they have moved to 0W-20 engine oil and increased oil change intervals.
Luke27617 is offline   Reply With Quote
Old 07-20-10, 09:31 AM   #10
Craig B
Moderator
Trader Score: (0)
 
Join Date: Mar 2007
Location: MO
Posts: 1,942
Default

They increased oil change intervals to compete with the other vehicle manufactures.
BMW has 15,000 mile oil changes, or once a year...
__________________
Craig

2007 LS 460
2014 GX 460 Luxury
Craig B is offline   Reply With Quote
Old 07-20-10, 11:43 AM   #11
Luke27617
Lead Lap
Trader Score: (2)
 
Luke27617's Avatar
 
Join Date: Oct 2009
Location: NC
Posts: 611
Default

Quote:
Originally Posted by Craig B View Post
They increased oil change intervals to compete with the other vehicle manufactures.
BMW has 15,000 mile oil changes, or once a year...
Competiing with others is a BS. They want to get on the money wagon. I have just sold my 09 335i. They do the 15k as it is easy $$$ for them. The only place where you can change the oil is BMW dealer and it costs almost $300. While under waranty they change it for free, after that you are screwed + the car is not reliable. It is manufacturer way to make a buck and the customer is getting rear ended
Luke27617 is offline   Reply With Quote
Old 07-20-10, 02:40 PM   #12
Craig B
Moderator
Trader Score: (0)
 
Join Date: Mar 2007
Location: MO
Posts: 1,942
Default

Quote:
Originally Posted by Luke27617 View Post
Competiing with others is a BS. They want to get on the money wagon. I have just sold my 09 335i. They do the 15k as it is easy $$$ for them. The only place where you can change the oil is BMW dealer and it costs almost $300. While under waranty they change it for free, after that you are screwed + the car is not reliable. It is manufacturer way to make a buck and the customer is getting rear ended
I traded in my 2009 BMW X5 twin turbo diesel for my GX 460...
I won't buy another BMW ever. My X5 was a lemon. That was my 4th and last BMW. I waited months for parts to repair a brand new vehicle. The electronics were junk as well...
__________________
Craig

2007 LS 460
2014 GX 460 Luxury
Craig B is offline   Reply With Quote
Old 07-21-10, 09:56 PM   #13
<VENOM>
Lexus Champion
Trader Score: (0)
 
Join Date: Jan 2003
Location: NYC/ATL
Posts: 2,615
Default

Compression ratio on the 4.7 is 10 to 1, the 4.6 is a more advanced engine with a compression ratio of 10.2 to 1, the old school method of choosing gas use to be by compression ratio, both engines should run on premium but thanks to modern ECU that can retard and advance timing, the engine is protect if constantly ran on regular.

But it should clearly be ran on premium, even if the toyota counterparts with the same engine can run regular, thats usually what Lexus owners do, default to the toyota with the same engine
<VENOM> is offline   Reply With Quote
Old 07-29-12, 05:38 AM   #14
Bcgx470
Driver School Candidate
Trader Score: (0)
 
Join Date: Jul 2012
Location: Sc
Posts: 1
Default Premium fuel????

New to forum. Sure this question discussed before but is premium fuel necessary. I have 2008 GX470 and been running 87 octane for a couple months. Haven't noticed any pinging or any significant changes in mileage or running. Are others doing this? Is this going to be harmful to vehicle longterm? I am aware the gas cap says premium fuel must be used.
Bcgx470 is offline   Reply With Quote
Old 07-29-12, 06:48 AM   #15
mitsuguy
Maintenance Moderator
Trader Score: (2)
 
mitsuguy's Avatar
 
Join Date: May 2005
Location: Missouri
Posts: 6,241
Default

A quick search will reveal at least a hundred threads regarding this...

long story short, it can cause detonation which wears the engine and causes poor power and fuel economy... (the computer senses the detonation and retards timing to compensate)

it costs $2-$3 on a complete fill up to use premium instead - you bought a luxury car, don't treat it like an econobox...
__________________
-cody: maintenance forum moderator
- Bridgestone/Firestone, Michelin/BFGoodrich certified
- ASE certified, Motor Vehicle Inspector, HVAC Licensed
- Lots more certs, too many to list here!

2001 Lexus IS300 - 500whp/476wtq (Mustang Dyno)PTE 6765/Custom AEM EMS - Auburn Sky Pearl (1 of 1348)
1999 Isuzu VehiCross 285/75-16 Destination MT's - Astral Silver Metallic (1 of 1021)

Last edited by mitsuguy; 07-29-12 at 06:57 AM..
mitsuguy is offline   Reply With Quote
Old 07-29-12, 06:48 AM
 
 
 
 
Reply

Tags
250, 400, 430, 450h, 460, es350, gas, gx, is300, lexus, premium, regular, rx, sc, vs

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
What octane to use in the ES300 <VENOM> ES300 and ES330 73 07-11-14 02:18 PM
4GS Fuel discussion Premium or Regular Gas? (merged threads) petek22 GS - Fourth Generation 205 06-23-14 08:54 PM
Regular gas in LS460 sktn77a LS460, LS460L and LS600h 1 06-11-14 08:03 AM
Premium Gasoline Necessary? pointman GX - Second Generation 34 05-13-14 08:10 PM
Reg unlead or premium??? Pmkettler RX - Second Generation 11 02-13-14 12:44 PM

All times are GMT -7. The time now is 10:00 AM.

Join ClubLexus
Advertising


Copyright © 2000-2008 Internet Brands, Inc. All Rights Reserved
Privacy Policy | Disclaimer | Terms of Use | JOBS


Get all contact info