I routinely install regular grade gas in my car (87 octane) , also a 57
D500 with 9.25 :1 combustion ratio, year round here, at 4K' elevation,
without any apparent adverse reactions.
You can adjust your car's timing to the gas grade, and just don't try to
do anything dumb, while using the lower octane.
Name brand gas does have more-better additives than the discount brands,
but the base-gas is all the same chemical substance; when the tanker
pulls up to the refinery, or wherever it gets its gas, the attendant
figures out what brand/type of product the tanker is supposed to
receive, and, just like the way your local hardware store mixes up
paint-to-order
colors, the attendant adjusts some valves and differering quantities of
additives are added to
the base gas, to produce "Shell", or "Texaco" or "CitiesSevice", or
BumFart blended gasoline.
It is claimed that higher octane might produce better MPG, but,
gas-is-gas ; the difference between the commercial products is the
quantity and quality of the additives which are put into the gasoline.
Neil Vedder
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--- Begin Message ---
- From: "Anthony C. Boatman" <acboatman@xxxxxxxxxxxxxxxxxxxxx>
- Date: Mon, 25 Aug 2008 09:58:29 -0600
Hi All,
I have a 57 Dodge with the D-500 Hemi engine in it, and I’ve
been using Unleaded Premium with a 93 octane rating. It runs just fine,
but I’m wondering if I am spending extra $$ I don’t need to.
Should it run equally well with lower octane? Considering I drive it
about 200 miles a year at most, I guess it doesn’t really matter, but is
higher octane really better for this engine?
A local station has begun carrying 110 octane, and some have
suggested I even switch to that. Since I’ve never driven the car
faster than 65 mph that I can remember, it’s not like I need any more
power.
Thanks,
Tony Boatman
57 Dodge D-500
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