[AJD] Lead in fuel, rant, plea

[Louis Spiegelberg]

Octane ratings have changed.  I am not sure when the ratings changed.  If
you look at the octane sticker on a pump, (I am not sure if this is even on
the pumps anymore), today's octane uses a formula of R+M/2.  That is
research octane + method octane divided by 2.  Back in the old days I don't
know what rating was used on the pump, but I think it different than what
has be used since at least the mid-70's.  I can be all wet on this. Maybe
someone has more insight to this.

Lou

-----Original Message-----
From: antique-johndeere-bounces at lists.antique-tractor.com
[mailto:antique-johndeere-bounces at lists.antique-tractor.com] On Behalf Of
Terry L. Hrdlicka
Sent: Monday, December 13, 2004 7:41 PM
To: Antique John Deere mailing list
Subject: Re: [AJD] Lead in fuel, rant, plea


All,

Now that this thread is dying down, I'll get out my poker and stir it up 
a little.  The question of "old" gasoline vs "new" gasoline got me to 
thinking.....

Back about 1978 or so, I bought a beat up old '66 Mustang with a 200 
C.I. 6 banger.  The P.O. still had the owners manual.  I recall reading 
in it that the engine was designed to run on "any regular gasoline with 
an octane rating of 100 or more.  Higher priced premium gasoline is not 
necessary...."  It struck me as funny (which is why I probably still 
remember it), when I would fill up with the "new fangled" unleaded that 
was getting to be the only thing you could find at the time, with an 87 
or so octane.

I do remember going to the airport and buying 110 octane av gas for a 
souped up 351 Cleveland in a Mach I at the outrageous price of $1.00 a 
gallon when we were going to do a little Saturday night drag racing ;)

Anybody know what "regular, leaded" pump gas used to have for an octane 
rating in the 50's, 60's and early 70's, before it got phased out due to 
catalytic converters?  What was "ethyl" rated?

Just wondering if my memory is intact,

Terry

BetCleve321 at aol.com wrote:
>  
> In a message dated 12/13/2004 4:56:53 PM Eastern Standard Time,
> steelerhawk at yahoo.com writes:
> 
> Tractor  note - It works well mixed with regular pump gas. (-;
> 
>>-  Steve
>>
>>Steve Sewell
> 
> 
> 
> 
> I have ten gallons of av-gas that I got in case the filling stations 
> didn't
> get open before I ranout of generator fuel.
> I wonder if it will work 50/50 in my lawn tractor? I am sure not gonna us
it 
> in the generator only as a last resort. That would be like drinking the
stuff 
>  to me. After the last two weather systems here, the generator gets 
> absloutely  pampered. Absolutely!
>  
> Skip
> _______________________________________________
> Antique-johndeere mailing list 
> http://www.antique-tractor.com/mailman/listinfo/antique-johndeere
> 


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