Thanks Gary, for the opportunity to participate in this test. I have benefited from this greatly. I didn't realize how much power and performance this engine had lost over the years.
My car runs a LOT better than I recall it running in a long, long time. Mileage is definitely up on the order of 7% on average, maybe a little better. I'm still getting over 40 mpg on certain runs that I make to Charlotte, NC from my home here in Wytheville, VA. The car used to get only about 36 to 37 mpg on that trip. I calculated 40.2 mpg on one trip during this latest OCI. Not bad for an engine getting ready to turn 200,000 miles. :) I'm not saying this will be typical, but this is what I have experienced with my car.
As Gary rightly pointed out, I have long been a skeptic of any kind of "wonder additive" for motor oil. (Search some of my old posts here). :o :D I have for some time been in the camp that says "everything your engine needs is already in a good off the shelf motor oil." I do still believe that, for the most part... but this AutoRX stuff is in a class by itself.
I don't know the chemistry--I just know it works. I've used kerosene based engine flushes in other vehicles I've owned over the years. I figured they would flush out the sludge, and maybe free up stuck rings... but apparently they weren't doing much--at least not compared to what AutoRX does.
Let me add this: If you have an old car with a lot of miles on the clock, and it's getting kind of sluggish (and truthfully, you may not even be aware of how sluggish it has gotten, if it's been happening gradually)... an AutoRX treatment will very likely amaze you, and pay for itself in short order by way of improved gas mileage (assuming you have some stuck piston rings, which you probably do have in an older engine)... Even if you don't look under the valve cover, just give it a try and see if I'm not right.
I'm not being paid by anyone to say these things, I assure you. Simply put this is one of those rare oil additive products that actually does do what it says it will do.
Dan
We will ask for photos from this users car now on bitog to be posted on Auto-Rx Forum
In some of the things that I ponder from time to time, I had often wondered what would happen if you took two bottles of Auto-Rx and cut the mileage in half (1500 at the time). Now I'd have no problem doing this ..except that I had no vehicles to test it on. I would have used some of the extended fleet ..but most of them had already used Auto-Rx.
I approached Frank for his thoughts on this. The notion interested him to see just how it would work out. Frank provided some limited relief on product cost which made my budget go a little further and afford testing (UOA)
In any event, I had a good random thought that made Fueltankerman (a BITOG poster) pop into my head. He had often commented that he had a vehicle with advanced mileage and that he didn't use any cleaners and whatnot ..and didn't really see much sense to UOA. It wasn't that he was against any of it, just that he didn't see the point given his success with what he'd been doing.
Now Dan's Escort was well cared for maintenance wise. Here's what he had in accumulations at about 190k. Nothing too serious here. Just what we would consider normal film accumulations over that duration of use with a fair shake at good maintenance.
I think I have them all in the right order here.
Here's what he started with ..not all too bad for 190k+/-:
Here's his filter at the end of his cleaning phase:
Here's the engine at the end of the cleaning phase. It's lightening up and some bare aluminum is visible:
This is 1500 into the 3000 mile rinse phase. More improvement:
Here's the filter at 1500 miles into the 3000 mile rinse phase:
Here's two images of the end of the rinse phase (3000 miles). More bare aluminum casting is clean. A pretty radical difference between the start and now. Dan reports that all of varnish remaining can be rubbed off with your finger. I'm pretty sure that this will continue to clean up as he moves on here.
I can't tell all of you how much of a sport Dan was on this. All that I did was provide some Auto-Rx and a couple of test kits and he was game for it all. I appreciate his willingness to do all the real work in this experiment. I couldn't have asked for a more willing and engaging partner. Truly a great guy.
I also want to thank Frank Miller, inventor of Auto-Rx, in extending me some latitude in pricing so that I could pull this off.
In hindsight, I might have started off at 1000 miles instead of 750. Dan was an ideal test subject in that he really didn't have much wrong, had not too complicated valve cover, advanced mileage ..and the will to do the work. Most importantly, he'd never bothered with any cleaning agents.
Dan reports performance/drivability improvements as well as mpg gains. I'll leave the impressions to him.
Here's the link to his first UOA via Dyson Analysis. He had some issues that he needed to clear up. 750 mile UOA The 3200 mile UOA will follow shortly.
The biggest bonus here for Dan is that his car is running so much better. His fuel economy is up and the drivability (performance) has been restored. The cleaning does give us some evidence of Auto-Rx "doing something" in a way you can share it ...but I think the big issue is the decoked ring packs and lifters that pump up better and friction points that get better lubed.
He noticed the performance increase fairly early on ..so he probably got the main benefit out of the treatment at about 500 miles...but "while you're there" ..the cleaning aspect, in terms of visuals, is kinda fun to watch. It does sorta prove the effects of Auto-Rx ..if not the primary benefits.
Not to take away from Gary's experiment with Dan's 1.9 Escort, but even following the old instructions (2 oz ARX per quart of oil) I got EXCELLENT results using Auto-Rx in a 1.9 Escort.
This Escort was a 1993 5-Speed with over 125,000 miles belonging to my brother-in-law who is NOT a car guy by any stretch of the imagination. The vehicle was bought new and used as an appliance. The routine maintenance schedule was whenever he thought to take it someplace to have someone else work on it.
I'm not sure why I even got involved.... I might have just volunteered one day to look under the hood. The response I got was "I think it might be low on oil, the oil light has come on now and again". That's how you check if you're low on oil???
Yes indeed, the oil level was a little below the add mark on the dipstick. The oil was black in color. He told me just to put in a quart of (Safeway brand) oil in the trunk. Um... I think you're due for an oil change. If you're willing to reimburse me for expenses I can take it over to my house and do it for you? "Sure.... go ahead and do that."
The PCV valve looked to have been changed at least once in it's lifetime. A check under the valve cover revealed that it was did not suffer from sludge build up. Still there was something that was causing the oil consumption problem. The black oil color I partly attributed to a air filter who's outer rubber edges had disintegrated to the point that the air box wasn't sealing correctly.
Along with fresh oil and a new filter I added 8 oz of ARX. After the completion of one clean and rinse cycle the engine no longer consumed any oil between 3,000 mile oil change intervals and the oil itself looked remarkably good, only slightly discolored. A far cry from the coal black color when I first got involved.
ARX is a great product... but you'll never know what it will do for your particular engine unless you unless you give it a try.
This engine benefited in it's internal oil lubricated engine parts being cleaned thereby being able to be lubricated. Thats why you use Auto-Rx to get these type results.
Remember oil-oil additives can't lubricate through metal covered by dirt-contaminants-sludge. Most engines suffer from one form or another of dirty metal. When you start replacing parts because of oil starvation, you should have been using Auto-Rx.
No oil can clean deep down enough to be effective if they did you would not have oil any more just toxic solvents & and no performance in lubrication.