I bought 3 bottles of Auto-Rx (Engine cleaning stuffs) . Should I use it to clean my 89 W124 with 120,000 miles engine?? I am taking my car to AAMCO tomorrow to have the transmission fluid changed, can they handle the job ???? Dealer charge me double !!!!($300 for so called power flush)

I think the consensus on this forum is that a quality oil is much better than any engine cleaning supplement, and I tend to agree with this. There are, of course, other opinions.

As far as the tranny fluid filter change, one would think that the dealer would use the correct fluid and filter for the tranny, which if you look in fastlane, totals about $100 for 8 liters of $10 fluid for refill (that includes torque coverter fluid change, which would probably be considered part of a "power flush") and a $20 filter kit. And these are fastlane prices, the dealer will be charging more. So half of the $300 dollars is probably for these items. Make sure aamco uses synthetic or oem fluid for the change. It is important.

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headrivenoise... listen.

Thank you. AAMCO said they use Dextron III which approved by mb.

if you got to www.motorminute.com and search for the sample newsletter they have a report on engine/trans flush machines.

I don't like engine flush machines, and would only want a person who has experience on my particular model transmission doing the work - even a fluid change.

120.000 miles is middle age and I don't know much about Auto-Rx but some of these cleaners dilute the oil.

When you say "engine cleaning stuff", I assumed that you meant spray degreaser kinda stuff for cleaning the outside of the motor.

Engines should be wiped off with rag, maybe a little all purpose cleaner (like Fantastic, although I don't buy the name brand), maybe a little "purple stuff" (new liquid degreaser that works great but can mark aluminum, Castrol sells it, but Napa has a "copy"), but NEVER pressure washers or copious soap and water.

Every Sunday morning I go to the local coin operated wash rack, which attracts 50+ nice cars. Nearly every time someone decides to "clean" their engine, going full force with the pressure gun. 90% of the time, the car doesn't start afterwards...

-David

Knock on wood but I've been pressure washing all of my car engines for years now, no problem. Just gotta know what to stay clear from.

These new 120 volt homeowner pressure washers are great for doing just that, less pressure so really not as much to worry about.

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Chas

Had a 380SL, 450SL, 380SEL, 420SEL, 500SEL

Got a Euro 500SEC right now.