I have read many of the experiences of ARX users on BITOG and they have been overwhelmingly positive, even from those who started out very skeptical. I will soon sit down and post my experiences on the forum for all to see. I have had noticeable improvements (fuel econ, oil consumption, and power) in every vehicle so far, and dramatic results in 2 of those vehicles. Also, my Chevy 305 started out with a really bad rear main seal leak from previous owner oil change neglect. I did not expect for this bad leak to stop, but after 2 treatments, it has slowed considerably. On same 91 Caprice I was getting lots of blowby oil up in the air cleaner to the point where it was leaking out of the air cleaner (vertical, plastic) and onto the engine.
This has gone down to a normal, oily residue inside the air cleaner housing near the hose port from the valve cover . When I looked into this same engine's oil cap hole on the left valve cover, I could see a valve spring to the side, but it was solid with sludge and could not see any gap between turns of the spring. Now, 8 thousand miles later with 2 treatments completed, I can see all the turns of that same spring and even some bare metal in places. I'm seriously considering a third treatment! - I don't think it could hurt anything. I've been using 15w40 Delvac diesel oil for all these cars during soak/clean and rinse phases.
I believe the better (than most PCMO) detergency and dispersancy characteristics will aid in the cleaning process. Besides, all these engines have well over 100k miles and it's blazing hot down here in SC this summer. Two other vehicles that were treated went from burning a quart of oil every tank of gas (about 400 miles), to a quart every 4th tank or 1500-1600 miles. This was after only the first treatment was concluded. They are both now in the middle of the second treatment cycle. Needless to say, the owners, which are both friends of mine who do not know each other, are impressed with the results and the additional years of life that may be left in their vehicles. One is a 93 F150 with a 302 and the other is a 93 Grand Marquis with 4.6L- quite different engines, but very similar results. I cannot help but believe that most of these higher mileage engines were suffering from stuck rings, reducing the seal of the rings to the cyl. walls.
I think that now the improved compression has affected overall power, and the better piston-to-cylinder ring seal has also reduced blowby and oil consumption. I have no other explanation for these improvements, based on my knowledge of engines. All I know is it works and I recommend it to others. The response is always, "order me some and I'll pay you for it", which I am glad to do. I either change their oil for them, or give them specific instructions on how to use it- plus, there are adequate instructions on the bottle too.
bmwtechguy (BITOG handle)
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