When I got my 94 Cadillac fleetwood, I had intensions of taking it racing.  It has 150,000 miles on it's LT1 350, so i knew it needed a bit of care.  A car for this needs to be in tip top shape, to avoid problems.  While I was changing valve springs i noticed how badly sludged the top end was.  I literally pulled out golf balls(sized) of "jelly".  After doing a bit of research, I was refered to AutoRX.  I figured it was anouther aditive that didn't do anything, but figured, I'd try it.  I followed the instructions, and after only 500 miles of the first treatment, I got on the car really hard to test it's performance.  It felt like I had added a set of headers!  I really could not believe it!  When i tested the 0-60 time, I had shaved off .5 seconds+, with no added mods from the last test.  It was even warmer outside when i did this test, and as any racer knows: colder air makes more power.  after changing the oil, I opened the valve covers again, to see a much cleaner top end, than my manual cleaning had done.

It now runs great, much smoother, and I have no douts that even wth my driving it hard, it will see 300,000 miles without a rebuild.  that is, if it doesn't become a 383 before then.  Thank you for your wonderful product.  I plan on putting it in my other cars, and other fluid systems to keep them cleaner.