Premium, middle grade or regular? (merged threads)
Driver School Candidate
Joined: Jan 2006
Posts: 4
Likes: 0
From: WA
I use this product in my ES and 87 works like magic if you reset the ECU. It take a few tanks but it stops the timeing from retarding and increased performance, burns cleaner and increases my gas mileage. 12oz =$12 so, 1oz/ 12gals.
www.polarmolecular.com
www.polarmolecular.com
Driver School Candidate
Joined: Aug 2007
Posts: 47
Likes: 0
From: ca
es300 uses 87 or 91 octane?
hey. does the es300 run on 87 or 91? i have an sc and i plan on getting an es300. i noticed that on my friend's es300 gas gauge it says unleaded. i need to save money on gas.
Last edited by king-pin; Sep 13, 2007 at 08:03 PM.
Driver
Joined: Jul 2009
Posts: 168
Likes: 0
From: OR
Fuel Octane Rating for a 1997 ES300?!
I'm curious if it is really necessary to run premium fuel in a 1997 Lexus ES300? The owners manual states 87 Octane is adequate, but I have heard different opinions from several sources stating that the car requires 91 Octane Fuel...Is this really necessary, or am I just wasting my money on expensive gas?
Lexus Champion
Joined: May 2004
Posts: 2,265
Likes: 3
From: Washington
89 Octane is what I use. The difference between 87 and 89 or 91 and 89 is very minimal. Let's say the difference is 10 cents and let's assume you're getting 12-14 gallons per fill-up... you're spending only an additional 1.20-1.40 per fill-up.
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Pole Position
Joined: Jan 2004
Posts: 3,379
Likes: 20
From: St. Thomas, Ontario
Why not try running your ES for an entire month on premium.....document your findings & do the same on regular? Let us know. 
I run my 05 ES 330 on regular.....Sunoco 87......I do not get any better or worse fuel economy than running Ultra 94......and my engine purrs like a kitten.
I run my 05 ES 330 on regular.....Sunoco 87......I do not get any better or worse fuel economy than running Ultra 94......and my engine purrs like a kitten.
Both fuels = same thing. The difference is negligible. Although the driving style has a lot to do with. This test was done using typical/repeating driving habits.
I run it on 87. And if it happens to be cheap i'll pour in some 91/94 a few gallons or so. I never actually ran it on a full tank of premium.
Pole Position
Joined: Jan 2004
Posts: 3,379
Likes: 20
From: St. Thomas, Ontario
Hey 01LEXPL, where abouts in Ontario are you located? I'm quite interested in doing the LED's for my 05 ES 330.
Pole Position
Joined: Jul 2006
Posts: 201
Likes: 2
From: Alabama
I would think that the Lexus owners manual would be the definitive source, and since they say that regular is ok then disregard the other sources. I have a 1997 ES300 that I have owned since new. I have run it on both, and found no measureable difference using premium, so I now use only regular.
You will be wasting your money unless there is a noticeable increase in either power or fuel economy, and there won't be.
the car doesnt require 91 but you wont be wasting your money on it. higher octane numbers burn slower = better