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http://www.Auto-Rx.com -> Auto-Rx Plus Comments-Questions -> Auto-Rx Plus For Engines -> Getting ready to use AutoRX on 166,000mi Mercedes
Post Info TOPIC: Getting ready to use AutoRX on 166,000mi Mercedes
Myndex


Newbie

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Getting ready to use AutoRX on 166,000mi Mercedes
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I have a 1980 Mercedes 450SL, and after reading everywhere that AutoRX is great, I'm actually convinced (it has takes some days of reading to convince me, having had bad experiences with other additives in years past).

My engine runs well, but is leaking oil, particularly out of the rear seal. I don't know if the seal is torn, and as it costs nearly $1000 to replace, it seems spending a couple hundred on AutoRX treatments is warranted first.

QUESTIONS:

My car takes about 9 quarts of oil so I'll be adding 18 oz of ARX with a clean oil change and then driving 2500 miles. 

Some people have indicated that you should change the filter at least once in the first cleaning cycle, though the ARX site does not mention this. Should I? I'm think that a filter change at 1200 miles, and then top off with fresh oil and more ARX.

At 1500 miles, I'm going to put 6 oz in the transmission. Then back to JiffyLube 1000 miles later, for the oil/filter on the engine to start the rinse cycle, and a complete fluid exchange for the transmission.


So, now a rinse for the next 3000 miles. ARX indicates changing the filter only at 1500 miles. Some places I've read indicate people changing the filter as frequently as 250 miles during the rinse phase. Should I? Any real benefit?

After this rinse, then do one more complete cycle of cleaning, then rinse.

After this final rinse, I'd like to go to a synthetic oil, though the ARX site indicates that this may cause additional leaking. What if I use a heavier weight synthetic, like Mobil 15W-50?


That mainly leaves my power steering (which I am probably going to have rebuilt due to play in the steering box), and my fuel injection.

Is there a good fuel system cleaner? An AutoRX for fuel injectors? I have CIS fuel injectors, which can't be backflushed (i.e. only replaced with new ones when fully clogged) but I'd like to try cleaning in place.


Thanks for any comments

Andy


http://www.my450SL.com

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RichG


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Myndex wrote:
Some people have indicated that you should change the filter at least once in the first cleaning cycle, though the ARX site does not mention this. Should I? I'm think that a filter change at 1200 miles, and then top off with fresh oil and more ARX.



If there is a large amount of sludge in your engine you may want to change the oil filter half way through the clean phase.  I did not and it still worked out fine.  But there was not much sludge in my engine.  If your engine is feeling like there's a loss of power, consider changing the oil filter as it may be full.


Myndex wrote:

So, now a rinse for the next 3000 miles. ARX indicates changing the filter only at 1500 miles. Some places I've read indicate people changing the filter as frequently as 250 miles during the rinse phase. Should I? Any real benefit?



 

Only reason they changed it that often was because they had a very large amount of sludge filling up the oil filter.  You should be just fine with changing it 1500 miles into the cleaning phase.  Again, use your own discretion on this.


Myndex wrote:


After this final rinse, I'd like to go to a synthetic oil, though the ARX site indicates that this may cause additional leaking. What if I use a heavier weight synthetic, like Mobil 15W-50?

Synthetic oil does not "cause" leaking per say.  It is just formed in smaller polymer strands which can find their way through tiny holes in seals that regular dino oil can't.  I've switched to synthetic last year and not a problem yet.  You can try using synthetic and if there is a leak problem still, switch back to dino.  In either case, be sure to add a maintenance dose of Auto-Rx.


Myndex wrote:

Is there a good fuel system cleaner? An AutoRX for fuel injectors? I have CIS fuel injectors, which can't be backflushed (i.e. only replaced with new ones when fully clogged) but I'd like to try cleaning in place.

I use STP Fuel System Cleaner every 6 months in my car.  I can't really say for sure how well it works, but I haven't had any problems with the injectors thus far.

Hope this helps a bit!

 



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Frank Miller


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Rich G has given you good information . If your Auto-Rx Application is for the purpose of stopping a seal leak please print out that application and follow it. We have had good success with seal leaks (unless seal ripped or torn) Please read the FAQ. Thanks for posting

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Frank Miller


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I just read some other information being giving to you on another board. Please remember the Auto-Rx Applications were developed because they work. On an application for stopping a seal leak there is no requirement to change out filters half way through cleaning and rinse modes.


That is for "SLUDGE" only. Follow the application for what it is you want Auto-Rx to do.

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