switching from 87 octane to 89 octane gas (IS250)
06-12-12, 05:22 PM
#61
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I'm not going to ruin my $35K+ car to save 10% on my fuel costs, which is about $15 a month. If I could't find $15 per month, I wouldn't have bought a Lexus in the first place.
06-13-12, 06:22 AM
#62
My post doesn't mention MTBE or Ethanol at all. It mentions higher altitude not needing as high an octane of fuel because the air is thinner.
Here's car talk themselves explaining this just as I did-
http://www.cartalk.com/content/my-ow...gular-unleaded
Originally Posted by Tom and Ray
And what allows you, Bob, to use lower-than-recommended octane is
the altitude in Colorado. Up where you live, the air pressure is lower.
That means the pressure in the cylinders is lower, too. So by going up
5,000-plus feet in elevation, you've effectively lowered the compression
of your engine, and that means you can use lower-octane fuel without
making the engine ping.
the altitude in Colorado. Up where you live, the air pressure is lower.
That means the pressure in the cylinders is lower, too. So by going up
5,000-plus feet in elevation, you've effectively lowered the compression
of your engine, and that means you can use lower-octane fuel without
making the engine ping.
06-13-12, 03:50 PM
#63
Uh.. what?
My post doesn't mention MTBE or Ethanol at all. It mentions higher altitude not needing as high an octane of fuel because the air is thinner.
Here's car talk themselves explaining this just as I did-
http://www.cartalk.com/content/my-ow...gular-unleaded
so, no, didn't have anything backward at all.
My post doesn't mention MTBE or Ethanol at all. It mentions higher altitude not needing as high an octane of fuel because the air is thinner.
Here's car talk themselves explaining this just as I did-
http://www.cartalk.com/content/my-ow...gular-unleaded
so, no, didn't have anything backward at all.
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