This thing had 110K miles on it. Bought it at 95K so don't know history. Doesn't burn a drop of oil. But it didn't run smooth and was doggy, so I tried ARx.

I was very skeptical that I would actually notice something.

I am 500 miles into the rinse cycle.

It used to feel doggy and gas pedal effort just made more sound than motion. Almost felt like it was towing something.

Now it revs better/faster, it responds to the gas pedal, and just feels peppier.

It isn't the placebo effect, I wasn't looking for the gain -- very noticeable.

I like!

Will probably try a second treatment.