Auto RX progress report on BMW

[Terry]

Russell it can be. The product is heat activated so more heat is good. The new oil add pack will also darken as it activates. The oil analysis will tell us alot about the cleaning capabilities of the Auto-Rx product. Sometimes people do report seeing visible granules of lubricious particles as RX scavanges trash out of the engine and is trapped in the oil filter.

Visual indications are dependent on the type of insolubles and other trash the engine has been carrying.

Enjoy.

 

[Russell]

Touring 5, the black specs smeared when rubbed.

 

[souroull]

used it in an e36 m3 with 95k and filter came out spotless. waiting to complete the rinse phase

 

[Russell]

I am now into about 600 miles of the rinse phase Auto-rx treatment on my 95 525i. I am using Havoline 10w40. I have done several blotter tests. I have noticed the oil seems to vary shades of darkenss from test to test. For example, the blotter shade varies from light to darker then lighter than darker as mileage increases.

Seems odd, except I suspect the rinse phase will clean/flush at varying rates. Perhaps when I test one time there is gunk in the system before my oil filter has stopped it. OAnother blotter test just happens to be after the filter has stopped the flow of gunk??

Also, I noticed a slight knock on a cold engine when my wife drove it today. Never noticed it before. It was gone after the engine warmed up. I will watch. Thanks to this forum I have heard there are few strange sounds that can come from a Auto-RX "cleaning" engine.

 

[Russell]

Now 1,300 miles into the auto-rx rinse phase on my 95 bmw 525i. Noted that the oil is not very dark, actually lighter than using synthetic Mobil 1 5w40.

Car seems to run perfectly. I went on a interstate road trip and the gas milage was outstanding. I got 29-31 mpg at 70-80 mph. Some of which was in fairly hilly terrain.

I really think that Auto-RX is doing something well. I may run the cleaning phase about 2,500 miles. I may even repeat the cleaning as the car has 117,000 miles on it.

However, If the filter is clean or has little debris after the rinse phase I may not repeat the treatment as the engine must be fairly clean??

 

[dbdeland]

Russell,

I personally would not go over 1700 miles on this rinse phase. You might want to check the instructions on Auto-Rx again good luck.

 

[Russell]

Why? Is there some sort of issue I am missing? RX Instructions from their web site (printed 8/30/05)states change oil/filter between 2000-3000 miles at the end of the rinsing phase.

Thanks

 

[dbdeland]

Russell,

You are correct I was thinking about the cleaning phase sorry.

 

[Russell]

BMW sat for two days with overnight temperatures in the 20s. When I was preparing to go homethis evening I noticed a slight knocking/thumping sound when cold idling and I was standing outside the car. I was loading my luggage. It was gone after the engine warmed up. Any thoughts? I hope nothing is wrong with the engine.

I will watch. Thanks to this forum I have heard there are few strange sounds that can come from a Auto-RX "cleaning" engine.

 

[Frank]

Strange sounds-blinking guages all telling you your engine was full of contaminants and Auto-Rx has cleaned off these areas and oil for the first time is lubricating them.These will go away after your done rinse cycle. They do not signify problems.

 

[Russell]

THnaks Frank. Since My engine has over 100,000 miles, I need/plan to run the process a second time.

BTW, the engine has never performed better. seems to have a bit better power and gas mileage is excellent.

 

[dbdeland]

Russell,

I agree with you engines with high mileage depending on the amount of sludge need two cleaning phases be patient it will work.

 

[Russell]

Update: I now have about 1950 miles on the rinse phase. Not much showing when I do a blotter test. No distinct ring just a center darking as the miles increase. Really not any different than when i was running 5w50 truck and suv. We shall see what the filter looks like. Ocassionally I still have cold start rattles and knocks. Outside overnight temperatures are in the low 20s

I plan to continue the first rinse phase to about 2,500 miles and then start my second bottle of Auto-Rx cleaning with dino 10w40 oil and a new filter

 

[Russell]

Rich21, what increase in fuel economy? My economy oo this engine has always been excellent. EPAs at 18/25 and i average 23-24 mixed driving. There was no real change with ARX.

BTW, I think the engine was fairly clean when I started. However, I am going to do the treatment "by the book" and do two treatments since I have 118,000 miles on teh car.

 

[Rich21]

Likely that ARX cleaned up the ring packs to achieve that kind of increase in fuel economy. Also if the motor was suffering from a bit of varnish like material, ARX would soluabilize and would be held in suspension in the host oil. This material is now flowable and likely will flow through the filter. However will drain with the oil.

 

[Frank]

In your case probably no change in MPG, however after both treatments are done is when you can tell for sure. Going on the Auto-Rx maintenace plan will keep gains from cleaning your engine stable.You will never have to clean your engine again.

 

[Rich21]

Sounds like your motor is in great shape. EPA mileage is usually overstated. So if you are running in the top end of the range, thats likely as good as its going to get. At least you should get comfort in that its likely to continue in this efficient manner for years to come.

 

[Russell]

Rich21, BTW, at 65 mph on level road I can get 31-32 mpg and can average 29 mpg on a long interstate trip.

Also,I just put 200 plus miles on the car today and it feels stronger than ever. I believe it is the ARX continuing to clean.

 

[Russell]

I have about 2,400 miles on the rinse oil. Plan to change oil/filter this weekend and start the process over with a new bottle of Auto-rx. This car seems to run stronger and stronger.

BTW, oil is getting slightly darker and faint rings are starting to form on a blotter. Not sure what that means.

 

[glennc]

Russell, have you done anything to try to nail down quantitative changes in performance? Mileage over a frequent drive, or max speed in a certain gear on a particular hill, etc?

- Glenn