unleaded street gasoline with leaded racing
gasoline seems to be the thing to do lately.
We receive a lot of questions about this
from racers trying to save money and/or
reduce the octane number of the product.
There are good and bad points in mixing
these two very different types of gasoline.
first problem is that if the product is
for a street driven vehicle, the resulting
gasoline is illegal since it will contain
lead. The biggest part of the illegal issue
is the $25,000 fine that one can incur.
THIS WILL RUIN
YOUR WHOLE DAY. If the
gasoline is for a racecar, the legality
is not an issue. By the way, leaded gasoline
has been illegal for use in ALL
street driven vehicles in
all states in the US since January 1, 1996.
second problem is that if the mix of gasolines
is for your racecar, you have contaminated
the highly sophisticated racing gasoline
with less sophisticated street gasoline.
Do you buy high quality beer, then dilute
it with water to make it last longer? If
you do, read no further because we can�t
help you. If you don�t dilute your beer
with water, read on. We can help.
good racing gasoline is designed to burn
efficiently between 5,000 and 9,000 RPM.
A good street gasoline is designed to burn
efficiently from idle to 3,000 RPM which
is the highest speed most engines see during
the EPA test for exhaust emissions. Mixing
the street gasoline with the racing gasoline
compromises the good high-speed burn characteristics
of the racing gasoline thereby reducing
the potential engine output. This also reduces
the octane quality of the blend.
the subject of octane quality, it is essential
that you have enough octane to satisfy your
engine by keeping it free of detonation.
Cutting down on the octane quality with
street gasoline is okay if you
can accept the side effects,
and as long as you don�t blend below the
octane requirement of the engine. When you
cut the octane down with street gasoline,
you will compromise engine output. Didn�t
you build this engine to go racing with,
and get the most power out of it that you
can? Why punish your engine by reducing
its output with a compromised gasoline?
item on the subject of octane, there is
no such thing as too much octane. Your engine
only knows when it does not have enough.
That�s when you have serious problems. �Over
octaneing� is a term that comes up occasionally
when someone thinks that their engine is
making less power than it should because
the gasoline has too much octane. When they
switch to a lower octane gasoline, power
increases. This can happen, but it is because
of all of the differences in the gasolines
that the user is not aware of, like the
various types of hydrocarbons in the gasoline,
distillation characteristics, etc. As a
racing gasoline manufacturer, the primary
way that we identify the gasolines is by
octane number and that is what the customer
usually looks at also, even though there
are many other variables that make a difference
in developing horsepower.
potential problem is that each time that
you blend racing gasoline and street gasoline,
you do not necessarily get the same end
results. This is because street gasoline
is �seasonally varied� six or seven times
per year based on the temperatures that
are anticipated in your particular area.
Racing Gasoline remains the same throughout
the year, but with the variable of the street
gasoline, one can get some less than ideal
mixtures that can contribute to vapor lock
and/or make consistent tuning difficult.
you haven�t figured it out by now,
Rockett Brand Racing Fuel
does not recommend the mixing of ANY
street gasoline with ANY
leaded racing gasoline. The
end results are too variable to predict,
and the engine performance is compromised
because the gasoline is compromised. Your
engine has to be all it can be (derived
from US Army ad) if you want to kick ass
and win. We do believe that you race to
win, right? Don�t make it tougher than it
Your Nearest Distributor, call 1-800-345-0076.