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Premium Gas vs. Regular

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Old 02-06-14, 06:24 PM   #31
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Originally Posted by KULEGOS View Post
Have u fuel up your GX with regular fuel? Can U see a diference betwin premium & regular?
I prefer to use the recommended and I have experienced knocking in my MDX with using regular. See this link to help your decision.
http://www.clublexus.com/forums/gx-s...-screw-up.html
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Old 02-07-14, 12:46 PM   #32
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I only run premium 93 octane at Mobil. You will lose power and MPG with regular. It will retard the timing and cut down on power. Not worth it in my opinion.
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Old 02-07-14, 01:31 PM   #33
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Originally Posted by tecman View Post
I prefer to use the recommended and I have experienced knocking in my MDX with using regular. See this link to help your decision.
http://www.clublexus.com/forums/gx-s...-screw-up.html
On my X5 once I experience knocking with using regular too... , but so far I did 300 miles with regular and no problem . I can't see the different's between my regular tank and fuel from the dealer , so far I have 520 miles on'it
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Old 02-07-14, 06:37 PM   #34
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Premium is $5 extra at fill up. Why even mess around, feed the beast what she wants!
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Old 02-08-14, 11:38 AM   #35
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Premium is $5 extra at fill up. Why even mess around, feed the beast what she wants!
It's about $8.00 for 23 gallons. I agree, not worth it to save a few bucks...
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Old 02-08-14, 02:49 PM   #36
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Premium is $5 extra at fill up. Why even mess around, feed the beast what she wants!
I have lived by those words!

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Old 02-08-14, 06:24 PM   #37
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Nice informative move,Thanks
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Old 02-09-14, 08:21 AM   #38
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I use Shell V-Power all the time, it's the only gas left without ethanol in Canada.
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Old 02-09-14, 10:42 AM   #39
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I use Shell V-Power all the time, it's the only gas left without ethanol in Canada.
I only use the same gas here but it has the ethanol. My fishing guides pay around 30 cents a gallon more for non ethanol gas for their 4 cycle outboard motors.
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Old 02-09-14, 04:26 PM   #40
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I would not short-change such a nice vehicle. An analogy would be to have a 5-star meal accompanied by a $10 bottle of wine. Just give it the recommended fuel, drive and enjoy the vehicle instead of worrying over saving some money when you have already bought a "luxury" ride.
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Old 02-11-14, 09:02 AM   #41
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Lexus and their engineers have spent countless hours and millions of dollars (or Yen) developing these hi-tech engines. Because of this, I follow their recommendations.
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Old 02-11-14, 03:08 PM   #42
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Does it really make a different? Try it and conclude yourself? Even at $8/tank if you pump twice a week it will add up. Shell Premium 91 is $.55 per gallon more than Shell 87 here.

Ever wonder why 2010 and 2011 RX350 recommended (not required) Premium but 2012+ RX350 recommends Regular? Same for the ES line.

The 4.7L in the GX470 is the same as the 4.7L in the Tundra and 4Runner but the Lexus asks for Premium while the Totoya asks for Regular. Same thing as 4.6L in Lexus and 4.6L in the Tundra.

Premium MAY help the engine running smoother and Lexus wants its customers to feel that way (at the customer's expense).
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Old 02-11-14, 07:02 PM   #43
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There was issue with 2007-2010 Toyota FJ Cruisers in which Toyota initially recommended premium fuel for the vehicle. Members of the FJ forum began hassling Toyota about the reason for this since the Tacomas and 4Runners used the same engine but used regular fuel. Toyota eventually sent out an e-mail stating that FJ Cruisers for those model years would have no issues using regular fuel.

That being said, I have always used premium fuel in my 2007 FJ Cruiser. There are members of the FJ forums that use regular fuel, but noted a decrease in engine performance and power loss. It's not significant since some FJ owners can live with that, but it is noticeable. I'd rather use my engine's full potential.
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Old 02-11-14, 08:02 PM   #44
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Quote:
Originally Posted by GoHuskers View Post
Does it really make a different? Try it and conclude yourself? Even at $8/tank if you pump twice a week it will add up. Shell Premium 91 is $.55 per gallon more than Shell 87 here.

Ever wonder why 2010 and 2011 RX350 recommended (not required) Premium but 2012+ RX350 recommends Regular? Same for the ES line.

The 4.7L in the GX470 is the same as the 4.7L in the Tundra and 4Runner but the Lexus asks for Premium while the Totoya asks for Regular. Same thing as 4.6L in Lexus and 4.6L in the Tundra.

Premium MAY help the engine running smoother and Lexus wants its customers to feel that way (at the customer's expense).
engines may physically be same, but they are tuned differently
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