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Automatic Transmission Fluid

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V

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Discussion Starter · #1 ·
hi all,
i own hyundai santro automatic transmission /nov 2005.
i've done 25000 km & have't change the transmission fluid since purchase , now what i'm curious about is the time to change it's transmission fluid. some times i feel gears are not coming as smoothly as they used to. the vehicle is performing pretty well otherwise. i'm from india , jaipur is small town . very few car's with automatic here, so authrised workshop mechanic's have little knowledge in term of automatic transmission car's since they hardly come across these.


guys please help me. is there any SOP'S TO BE FOLLOWED (STANDARD OPERATING PROCEDURE) when changing the automatic transmission fluid. & when is the right time to change. as it's been almost 4.5 yrs since i'm running my car with ATS change however i've done only 25000 kms mostly in city .

anticipating help eagerly ...
regards

vikas
 
jsinton

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#2 ·
It should all be in the owners manual. Let's assume you have what is known as a "severe condition" driving in town in India all the time. The manual should recommend you change at 50,000kms. If I were you, I'd probably be changing it a lot sooner, especially since you are complaining about shifting. It's just a little tiny car with a tiny engine and transmission. Probably it will specify SP-III for the fluid, but I have no information. It's important to use the correct fluid.
 
V

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Discussion Starter · #4 ·
QUOTE (jsinton @ Jul 5 2010, 08:07 AM) index.php?act=findpost&pid=338926
It should all be in the owners manual. Let's assume you have what is known as a "severe condition" driving in town in India all the time. The manual should recommend you change at 50,000kms. If I were you, I'd probably be changing it a lot sooner, especially since you are complaining about shifting. It's just a little tiny car with a tiny engine and transmission. Probably it will specify SP-III for the fluid, but I have no information. It's important to use the correct fluid.
Click to expand...
thanx jsinton :)
well i feel whenever my car is loaded or comes down from hilly area, it stuck mostly in third gear then after touchin over 90kmph it shifts to top gear. and after few days , it becomes normal. it got it checked from hyundai, workshop mechanic says it's abosolutly alright. he is not even recommonding for ATS change , but i don't want to take chance. because i know repair cost of automatic transmission can cost fortunes. since awareness is less about automatic transmmission is less , i need expert advice. like how much ATS require , should i buy 7 ltr pack as i presume it doesnn't cosume the whole 7 ltr.

also the procedure of changing the ATS , should i get engine running while changing . when they chages engine oil , they empty the oil & start pouring in the new one , i suppose in ATS you can't get it empty & then pour in . i have so many doubts.

please help.
 
jsinton

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#5 ·
There is a lot of ways to change the transmission fluid. Yes, when you just empty the pan, it only drains about half the total fluid.

The shop will probably try to pump out the old fluid by running the motor up on a lift.

Some places will disconnect the fluid lines and run the engine on the lift and pump out the fluid that way while sucking new fluid up the other fluid line. That's know as a "flush".

Usually I just drain the pan, and replace with fresh every time I do an engine oil change. It's not perfect, as it leave half the fluid, but if you do it often enough the fluid stays nice and fresh.
 
Mr Pogle

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