Wednesday, December 16, 2009

What happens when you only drain the transmission oil ?

What happens when the car reaches 30,000 miles and its due for a transmission change ? Do I just lift up the car and unscrew the transmission plug and let the fluid drain completely and then fill up with new fluid ? Then I am done ?


Are the step by step like doing an oil change ?








ThanksWhat happens when you only drain the transmission oil ?
You don't give enough information for anyone to answer your question accurately.





for instance what make car are you referring to? As some have said your car doesn't have a drain plug it has a pan and you need to change the filter. Well, IF it is a Honda then it does have a drain plug and there is no serviceable filter.





You really need to start over from the beginning and this time tell everyone what make vehicle you are asking about.





Heck you don't even say if it is automatic or manual so that is why you are getting a lot of possible wrong information for answers.What happens when you only drain the transmission oil ?
By doing just the drain and fill you are only changing the fluid in the pan and not what's in the trans itself, then you start the vehicle and drive it and mix the dirty fluid with the clean fluid. There are machines that can back flush the filter and change all the fluid in the trans and it is much more efficient and will last longer that doing it the way you are talking about. Kind of a pay me now or pay me later way to do it.
if it has a drain plug, yes... however if it's a manual, most manuals only need service every 100k.





most automatics should be serviced every 30-50k to keep them operating at prime condition. you can either drop the pan, drian them and replace the filter, put the pan back on and refill (only gets 30-40% of the fluid in the transmission) or get the transmission flushed. contrary to wha people used to say, this method does NOT increase the pressure on the transmission as the machine is actually operated by the transmission pump, so pressure is the same as always. it should NOT be done to cars that have 100k or more and have never had it done. it gets 100% of the fluid if done correctly, but you are still left with the old filter in the trans. many people recommend you alter the way you do it as a result. neither is a complete service.
At 30.000 miles a lot of cars recommend a auto-trans service. That is, drop the pan, replace the filter and gasket, and filling the fluid with the recommend ATF. Here is a helpful web site for this like that, just dig around in there for it and a lot of other good info, http://www.autorepair.about.com Good Luck.
the pan don,t have a drain plug. you have to take the bolts out of the pan, let it drain. while the pan is down it,s best to change the filter too.
In a manner of speaking, yes. Just make sure you put the plug back in before filling it back up, and make sure you're using the right kind of fluid.
it would be a good idea to change the filter also,but that means you will have to drop the pan.you should change the filter.
automatic?most dont have a plug to drain have to drop pan has a filter inside thats replaced clean off old gasket put new one on and fill
Check your owner's manual.


Automatic transmission typically only need a fluid change after 120000 miles.


They do not have a drain plug and they do not use ';oil';.

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