For starters, I suggest everyone interested in this colossal waste of
money do some personal research.  Start with:

http://www.vtr.org/maintain/oil-additives.html
http://www.ftc.gov/opa/1996/9607/slick.htm
http://www.ftc.gov/opa/1997/9707/slick.htm
http://skepdic.com/slick50.html

All of these additives are pure garbage.  In fact, they are more likely
to damage your engine than prolong its life.

Mike Snow

Larry Calhoun wrote:
> Hi one and all,
>
> Duralube, Slick 50, Power Up, Prolong,     No mystery oil for me!
>
> A few years ago their was a TV ad for some snake oil. They took a fleet of
> various cars that had been treated with an additive like Duralube, Prolong,
> Slick 50 or some stuff. The cars had all the oil drained from the
> crankcases, They claimed to have run the cars for a long period of time over
> a race course with no oil in the motors.All the engines sounded fine and
> performed like a new car should while on the course After the test the cars
> had their drain plugs reinstalled, refilled with oil and they claim there
> was no damage done to any of the motors due to the use of their amazing
> product.  My point is this.  The cars they tested all had hydraulic lifters.
> With no oil in the lifters they would collapse and sound like the engine was
> coming apart. They would also suffer a lot of power loss since the lifters
> would be collapsed thus not allowing the valves to open properly. The TV ad
> was a complete con job if you ask me. Lets here your opinions. I'm a firm
> believer that an oil change with a high quality oil and oil filter every
> 3,000 miles, along with sensible driving  are the basics for long engine
> life.
>
>
> Will
>