Premium fuel in the GX470 necessary?

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Old 12 Dec 2003, 09:04 pm   #21 (permalink)
James P. Clark
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Default Re: Premium fuel in the GX470 necessary?

Thank you all and Matt Fournier for that last post. The link explained the issue very clearly. I will use the recommended gasoline octane for the vehicle.

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"James P. Clark" <james.clarkANTI@SPAMadelphia.net> wrote in message news:zywzb.8695$zL1.1747283@news1.news.adelphia.ne t...
I've got a GX470 on order and should be picking it up next week. I know that Lexus recommends premium gas be used, but I'm wondering if there would be ill effects in using regular octane gas instead?

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Old 29 Nov 2017, 11:45 am   #22 (permalink)
hranola2@gmail.com
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Default Re: Premium fuel in the GX470 necessary?

On Wednesday, December 3, 2003 at 7:59:59 PM UTC-6, James P. Clark wrote:
> I've got a GX470 on order and should be picking it
> up next week. I know that Lexus recommends premium gas be used, but I'm
> wondering if there would be ill effects in using regular octane gas
> instead?
>
>
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> Please remove all UPPERCASE letters in
> the reply email address!


From the Owners Manual:
"Octane rating
Premium unleaded gasoline with an Octane Rating of 91
(Research Octane Number 96) or higher required for
optimum engine performance. However, if such premium
type cannot be obtained, you may use unleaded gasoline
with an Octane Rating as low as 87 (Research Octane
Number 91).
Use of unleaded fuel with an octane number or rating lower
than stated above will cause persistent heavy knocking. If
severe, this will lead to engine damage.
If your engine knocks...
If you detect heavy knocking even when using the
recommended fuel, or if you hear steady knocking while
holding a steady speed on level roads, consult your Lexus
dealer.
However, occasionally, you may notice light knocking for a
short time while accelerating or driving up hills. This is normal
and there is no need for concern.
Gasoline containing detergent additives
Lexus recommends the use of gasoline that contains
detergent additives to avoid buildāˆ’up of engine deposits.
However, all gasoline sold in the U.S. contains detergent
additives to keep clean and/or clean intake systems."
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