Re: Bush's words on oil are utterly devoid of meaning
- From: nick c <n-chen@xxxxxxxxxxx>
- Date: Fri, 19 May 2006 00:05:04 -0700
Barbara Lake wrote:
"Justin Case" <krblmb@xxxxxxxxxxxxx> wrote in message news:JJ5bg.3838$y4.768@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"Just Judy" <Just_Joody@xxxxxxxxxx> wrote in message
news:aveo629rebok8tede2mhvdb9q58e4ohgau@xxxxxxxxxx
<snipped>
: Michael is looking to buy a late-model Camry; I'll pass along
: the "ping" notification to him. My '97 (V6) runs on 87 octane which
: saves me approx. 20 cents per gallon over the premium price.
:
: Back in the mid-'60s when I had my '66 Austin-Healey Sprite, I
: needed to run it on Amoco *high test* ... the most expensive gas ... in
: order to avoid the ping.
: -- : Judy~
Y'all know, I assume, that pinging, sometimes called "knocking," is not only
annoying to listen to but is a condition that can be harmful to the engine
if allowed to continue over time? Pinging results from a premature
explosion, pre-ignition, of fuel in the combustion chamber at a time when
there is a tiny bit of "slack" between the piston and the connecting rod
which slams both together at the wrong time. Many newer cars have knock
sensors that retard the spark slightly when pinging occurs with a consequent
slight reduction in gasoline mileage.
Ken Bland
It's my understanding that almost any car can be tuned so that it runs efficiently on low octane fuel. I have a '92 Buick that runs great on regular.
Barbara
No Barb. Cars with high compression engines, producing high horse power ratings (at various RPM's) can't or must not be detuned. There is a limit to which engine ignition may be retarded and high performance engines don't have much leeway.
My wife drives a Buck Park Avenue Ultra (a big damn boat) and she uses 87 octane gasoline; either Mobil or Chevron. Contrary to common belief, using higher rated gasoline than necessary does not make an engine run more efficiently. Engine efficiency is largely determined by engine timing, general engine maintenance, as well as the quality of gasoline being used. Using a higher octane rated gasoline than necessary may well translate into just burning up money.
.
- References:
- Bush's words on oil are utterly devoid of meaning
- From: trudogg
- Re: Bush's words on oil are utterly devoid of meaning
- From: Justin Case
- Re: Bush's words on oil are utterly devoid of meaning
- From: Barbara Lake
- Bush's words on oil are utterly devoid of meaning
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