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Old 04 Dec 2003, 10:13 pm   #9 (permalink)
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Default Re: Premium fuel in the GX470 necessary?

Ignoring his agents wishes,"Carl" <> flung open the hotel room
door and announced to the gathering crowd:

>If you ask 3 people this question, you'll get 4 different answers.
>I switched to regular in both my GX and LS430 a long time ago, and have experienced nothing but lower gas bills. No performance problems, no engine damage, no nothing, just plain old lower costs.
>Do what you want, and don't let the zealots push you around!
> "James P. Clark" <> wrote in message news:zywzb.8695$ 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?
> --
> Please remove all UPPERCASE letters in the reply email address!

"Are you tempted to buy a high octane gasoline for your car because
you want to improve its performance? If so, take note: the recommended
gasoline for most cars is regular octane. In fact, in most cases,
using a higher octane gasoline than your owner's manual recommends
offers absolutely no benefit. It won't make your car perform better,
go faster, get better mileage or run cleaner. Your best bet: listen to
your owner's manual."


"What's the right octane level for your car?
Check your owner's manual to determine the right octane level for your
car. Regular octane is recommended for most cars. However, some cars
with high compression engines, like sports cars and certain luxury
cars, need mid-grade or premium gasoline to prevent knock"


"Should you ever switch to a higher octane gasoline?
A few car engines may knock or ping - even if you use the recommended
octane. If this happens, try switching to the next highest octane
grade. In many cases, switching to the mid-grade or premium-grade
gasoline will eliminate the knock. If the knocking or pinging
continues after one or two fill-ups, you may need a tune-up or some
other repair. After that work is done, go back to the lowest octane
grade at which your engine runs without knocking."

from: "The Low-Down on High Octane Gasoline"

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