Just wanted to report on my Pilot's situation regarding the use of Auto-RX. Some of you might know about the pinging/ratchety sound problem I was having, particularly under moderately heavy to heavy load, between 3K - 4.5K RPM.
I was searching and searching and discussing with people in here and over at the X site as well about it with no fix for the problem. dukeofjuke
had his problem and had it resolved when it was determined that his "Y-pipe" had a faulty baffler and something was lose in there, but that wasn't the case with me.
But what I am reporting here is that, after the full two treatments or cycles with Auto-RX, my pinging/ratchety sound is pretty much gone now.
It just may be coincidental, but I don't care. All's I know is that after following the prescribed use with Auto-RX, the dreaded and torturing sound is gone. I can now punch the gas pedal without wincing or fears of something go wrong. The sound is just gone.
Auto-Rx is the only variable in this figurative equation. Before I used it, no matter what I tried, even using 5 straight tanks of premium gas (octane 91), the sound was still there. I used Chevron's Techron along with the more expensive gas right before an oil change and it still was there.
But as I finished my first treatment with Auto-Rx, I noticed the sound did diminish somewhat. But now that I've fully finished the second cycle and had an oil change like you're supposed to, the noise is pretty much gone.
I am relieved. I am happy. I love my Pilot now. Ironically, right after my warranty ended, the window scrunching sound (for which I did apply a liberal amount of silicone gel), and the pinging/ratchety sound were gone.
I now merge onto freeways without fearing the sound piercing through my ears. I now can punch the gas with a peace of mind. (Please save me the sanctimonious, "you shouldnt've got a Pilot if you're gonna drive it like a sports car. I don't, but there's nothing wrong with wanting some power now and then when needed.)
I think a few things I can draw from this is that, my pinging/ratchety sound problem was entirely from within the engine, since Auto-Rx is supposed to thoroughly clean the innards of your engine and when used for the 2nd cycle, tightening up the seals somehow. You can read all about it over at www.auto-rx.com.
But, I found out about this stuff after reading positive reviews after another at www.bobistheoilguy.com.
There, you'll find testimonials after another about many products. Auto-Rx's testimonials rank right up there in terms of customer satisfaction.
I saw firsthand how dirty the inside of my intake gasket manifold was when the EGR valve was being replaced. This isn't the plastic cover, but the actual aluminum plate that needs to be taken off when doing this. When that caked up sludge was present in my religiously maintained Pilot (@5,000KM/3,100mile interval) maintenance schedule, I really had nothing but the EGR valve to blame. And remember, I was suffering from the faulty unit for probably a little over a year.
After the EGR valve was replaced, the sound was still there, much to my dismay and disappointment. But after the prescribed rigorous treatment with Auto-Rx, the sound now is gone. I'm sold on this stuff and I plan to use it, with all my cars from now on. I ordered a couple more to use on my minivan.
I never had much problem with the Pontiac Transport at all and certainly has had less problems than the Pilot even though we gave it half the maintenance procedures as the Pilot, having owned it more than twice as long. But I'll still give it the Auto-Rx treatment, after seeing what it's done to my Pilot!