In my 56 Plym with the stock 6cyl, I run whatever the high test is at the
station I pull into. Usually 92 or 93 octane and I don't use lead additive.
I always here it will damage the valves and then others say it's bullshit.
I figure with the little I drive if it's a problem down the road, I'll
rebuild.
But I've gone about 15,000 so far on high test unleaded.
Nick
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From: Joe Mopar
To: L-FORWARDLOOK@xxxxxxxxxxxxx
Subject: [FWDLK] Old cars and new gas?
Date: Friday, November 06, 1998 11:04AM
Hello all,
I have a question about how you all handle new fuel in your older cars. Of
course there is the problem of lead vs. unleaded, but I am also wondering
about
octane levels. I know that for some of the hotter engines in the fin cars
the
engine compression ratio was very high. (Like 11:1 and more) In Colorado
premium pump fuel is 91 octane, hardly correct for 11:1 comp. What do you
guys
do? Is there lead/octane additives that you like? Does anyone know if
altitude
has an effect on this as well? Am I wrong, and 11:1 does fine on 91? Just
curious,
Peter
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