A quick update on my AutoRX experinces. I've talked about the cleaning of the abused 98 Beetle, but want to update everyone on the performance of my truck.
The truck (2001 F150, 72K miles, 4.2L v6) has had regular oil changes every 4-5K with either Royal Purple, Quaker State Synthetic, or Mobil 1. I ran 5w-30 dino for first 8K miles then switched to the synthetics. With the relatively clean oil that would drain, I suspected that this engine was super clean. I decided to run and ARX treatment anyway to see if it would clean anything else and besides I got that 3 bottle deal. Now I'm about 700 miles into it and, WOW - what a difference. I guess I didn't break this truck in right, because it is really starting to run strong. I drove it like an old lady for the first 10k miles, and I think I probably gummed up the rings. Now that the rings are cleaning out, the power is really there. I've been chirping the tires when pulling out into traffic and acceleration is on par with a V8. Very happy with the results so far.