Dear Mike,

I can understand your concern, however the term "SlickDiesel" has
nothing to do with Teflon.

Lubricity was not much of a concern prior to October 1993. When the
Clean Air Act of 1993 went into effect lubricity was brought to the
forefront of concern. When the fuel was altered in October 1993 sulfur
and aromatics were reduced which left a cleaner burning fuel. This hydro
treating caused a lubricity problem for light weight diesel trucks and
diesel cars. The sulfur went from over 5,000 ppm (parts per million)
sulfur down to less than 500 ppm sulfur and the aromatics was reduced by
about 20 percent. Not all fuel was affected equally, however all fuel
was affected enough to raise concern.

The lubricity of diesel fuel is defined as the ability of the fuel to
minimize friction between and damage to surfaces in relative motion
under a load. Fuel lubricity can be restored by the use of
lubricity-enhancing additives. The industry started realizing that
lubricity was important as fuel pumps and injectors began to fail. Some
of the failures were due to seals in the fuel system which were fixed
fairly quickly. The ASTM (American Society for Testing and Materials)
tried to come up with a standard, however for many reasons it wasn't
until January 1, 2005 that a standard for diesel fuel lubricity was
established as official, which is the ASTM D6079 (High Frequency
Reciprocating Rig standard). It establishes a wear scar of 520 microns
as the pass criteria for diesel fuel. Basically, this test oscillates a
steel ball against a plate immersed in diesel fuel (referred to as the
test fluid) and the wear scar cannot exceed 520 micron. In 1994 Bosch
conducted a lubricity study that covered the interests of BOSCH,
Stanadyne, Delphi, Denso Corp. and Siemens. Their study showed that 80
percent of the fuel tested did not meet the lubricity standard for their
fuel pumps.

We have been adding lubricity to our additives since 1993 to meet the
current HFRR 520 standard. This is very impressive since lubricity has
been established as one of the major causes of fuel pump and injector
failures. It has often been referred to as the normal wear of these
components, however we have never considered any wear that is easily
prevented as normal. In June 2006 all On-Road Diesel Fuel is going to
undergo another change. At this time, this fuel will have to have less
than 15ppm sulfur and the industry is expecting fuel lubricity to be
reduced further. This is why the new standard went into effect January
2005. This is also why we have labeled our products with the word
"SlickDiesel". If you use our Diesel Fuel Supplement, Diesel Kleen or
Diesel 911 there will be enough lubricity in the product to convert low
lubricity fuels to exceed the new lubricity standard. The really
important part of this news is that the new HFRR 520 wear scar standard
is still not good enough, according to the fuel pump manufacturers, to
prevent premature wear of fuel pumps and injectors. So when you use our
products with the SlickDiesel you are giving your equipment the
lubricity they really need.

If you have any other questions or concerns please let me know and rest
assured that if it runs on diesel fuel it will run better on Power
Service Products.

Best regards,