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I bought my car used and was going to have the transmission flushed but heard it can do more damage than good if it was never done before. What should I do cuz I don't know if it was done ever

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  • rdjagger Mar 31, 2015

    A change of trans fluid and filter can never hurt


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Hello Gina, I have never heard of fresh transmission fluid and a new filter as being bad.

Posted on Mar 31, 2015

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I would go with the manufacturers recommendation.

Posted on Mar 31, 2015

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Posted on Jan 02, 2017

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SOURCE: To flush or not

honestly i am not sure ,cant see a auto box getting dirty oil ,but if your towing then surely a manual gearbox is a better option.

Posted on Jan 14, 2010

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Transmission shudder and hard shifting

take it to a transmission shop and have the tranny flushed which also flushes the filter cost is around 100.00 us but well worth it

Mar 25, 2015 | 1995 Oldsmobile Cutlass Ciera

1 Answer

When should you get a transmission flush

I dont see why it would cause damage. Your transmission Fluid is alot like like regular oil. It needs to be replaced here and there. being that your car is an 06' It should be replace between 30,000-100,00 miles so youre probably due for one. The reason for this is, is because Over time when TF (transmission fluid) is heated up anywhere above 175 degrees it begins to oxidate and turn brown and it looses it lubricative qualities. thus putting a strain on your transmission with more heat and friction. so i'd say yeah get it done.

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The radiador and transmission fluids are mixed and the van overheated. Why?

The transmission is cooled by the radiator. The transmission cooling lines go into the radiator where Inside the radiator these is a heat exchanger that has sprung a leak. This is where your fluids are mixing. Your radiator is loosing coolant into the transmission ( not a good thing ) . Your transmission fluid is now contaminated and may fail soon unless the problem is fixed quickly,however the damage has already been done. At the very least you will have to replace the radiator, flush the cooling system and flush the transmission and install a new transmission filter.

Aug 08, 2011 | 1998 Plymouth Voyager

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There was white smoke coming from what seemed to me, from the i took it to walmart and he added oil. i was told in the last oil change that i needed my transmission fluid changed....i...

is is very likely that if you put transmission flush in a vehicle that has done that milage it will do more harm than good,it is fine to use transmission or engine flush from when the vehicle is new but never in a vehicle that has done a lot of milage, just change the transmission fluid & it should be fine.....hope this helps......cheers.

Jun 22, 2011 | 2004 Pontiac Sunfire

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I have over 100,000 miles on my 2002 Jeep. I bought the jeep from a friend. The jeep gran cherokee is in excellent condition and very well taken care of. Question I want to get the transmission fluid...

Some people have complained that after flushing the trans, it failed. But I believe they waited until the trans was acting up and then had it done. Also, a flush is when they hook up a pump and use 5 gallons of new fluid to push out the old. Transmissions have a filter in them that is not replaced this way, and I wonder if that has something to do with it. I have always dropped the pan, changed the filter and gasket, cleaned off the magnet in the pan (another area a flush does not get) and then refilled with new fluid. You may have some old fluid left over, but 90% new is better than 100% old, and you get rid of the dirty filter.

Feb 23, 2011 | 2002 Jeep Grand Cherokee

2 Answers

Should i change my transmission fluid, i heard it could damage it and cause it to go out?

its a 1999, have a bg trany flush done, this is done with a cleaner added to fluid, then a machine is used, it hoohs up to line of trany, it then flushes out 100% of the old fluid,this is the best way, also trany oil should be changed every 30,000 miles.hope this is helpful, also check out there website,@ for more info.

Feb 19, 2010 | 1999 Oldsmobile Intrigue

2 Answers

How to do a transmission flush for a lexus LS 430 2001

All transmission flushes are done by machines at an auto shop. The process which happens is they drain the tran. fluid out then hook up there machine to run cleaning fluids from the top to the bottom for several minutes flushing out all the impurities and old oil. Then they fill back up with normal transmission fluid and your typically suppose to change out the fluid after a flush in as little as 5k miles. After that your good for a long time!
Hope this helps!
Good luck!!

Sep 17, 2009 | 2001 Lexus LS 430

2 Answers

30K Service

Any local mechanic shop that you trust should be able to handle these basic tasks for about $130.

Jun 09, 2009 | 2006 Hyundai Sonata

2 Answers

I have a 1995 Suburban do you think it is necessary to flush the transmission? I have heard several different opinions from flushing every couple of years to not doing it at all because the tranny can be...

1st let me make sure we agree on what a transmission flush is: the quick oil change places around here offer a transmission flush, when I asked what exactly was done (the price seemed far to cheap to include fluid, filter, and labor), I was informed that a tube is placed in the dip stick, and as much fluid as possible is drawn out, and new fluid added. In my opinion, this is a total waste, I advise that you don't do it. The reason is this: changing your trans fluid AND filter is great preventative maintenance for your transmission. By drawing out the fluid through the dip stick tube, you are still left with a dirty filter. Many vehicles have a magnet located in the pan, and it collects fine metal particles that occur from normal wear and tear. When the pan is removed to access the filter, this magnet can be cleaned, and any abnormal wear (pieces of metal, not fine stuff) can be observed when this is done. Not so with the 'flush'. So yes, service the tranny, but do it the right way.

May 01, 2009 | 1995 Chevrolet Suburban

3 Answers

Flush engine - transmission

Engine & Transmission Flush

You might have been told, by your dealer or mechanic that your engine oil or transmission fluid are very dirty, & an engine or transmission flush, is recommended. The flush will clean the engine or transmission, & those will last longer. This is only part true a clean engine or transmission will last longer, but I'm not sure that flushing them is the best way to clean them.

What Is An Engine Or Transmission Flush?

Flushing is forcing high pressure of fluid against the normal flow of the fluid. In simple words if the normal flow is left to right, the flush would force the fluid right to left.

This is done by connecting a machine that will force special solvents back through the engine and transmission. The idea is that by forcing cleaning solvents backwards through the system, it will get all the junk and garbage that has formed over time and "flush" it out of the system. In theory this sounds very good, but in practice, it can be dangerous.

The Dangers of Flushing your Engine or Transmission

Flush machines force high pressure cleaning solvents back through the engine and transmission and clean out some of the accumulated junk that has formed, so far all is good. Now the problems start, engines have small passages and galleries through which oil or automatic transmission fluid flow and there are one-way valves that keep the fluids from backtracking for whatever reason.

By using an aggressive cleaning procedure like flushing, large chunks of accumulated sludge are broken off and forced backwards through these galleries and valves and, more often than not, lodge tightly and block them. This cuts off the normal flow of the fluid and causes lack of lubrication in an engine and abnormal or no shifting in a transmission. The results are expensive repairs, or more often, engine or transmission replacement.

That's my knowledge about the subject, hope it was helpful,

Jun 29, 2008 | 2008 Toyota Yaris Sedan

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