2008 Nissan Tiida auto transmission oil leakage

it may be seepage and not really a leak just watch trans fluid level if it goes down then have it looked at

First of all i really appreciate your prompt response and I already checked oil level and its at top and my gear box oil colour now brown. I want to know what is seepage and i want to know whether I need to quickly repair this or I can ignore this and drive my car??

seepage is kind of like an oil stain or a little heavier mixed with dirt around a line or pan of transmission. if the color of your fluid is brown change it we don't have your model in US a leak on a trans would definitely drip. unless you just purchased this car and fluid is up change it and keep an eye on it. Maybe once a week should be sufficient. If the trans starts having problems after you change it then have a trans guy look at it.

I am the 1st owner and last time when I changed gear box oil my odo meter was 57000km and I changed oil from local agent. Still my car runs well and gears shift very well. Finally my car in usa is known as versa. Finally I want to know how to repair this seepage and whether I can ignore this an run my car??

you can probably ignore it and check it in 6 months or so. you have to find the leak and normally it's a gasket or an o-ring but it depends on where it is. as to what it will take to stop the leak . some of it could be blowing from someplace else. best bet here is to try to clean it off and wait and see if it comes back, but from what you describe I wouldn't worry about it.

Today I informed this oil seepage to local agent and he said now you can't drain & pour new oil to the gearbox since there's a oil seepage therefore It may be worse once you add new gearbox oil to the gearbox and they are not responsible oil leakage that can be happened after changing gearbox oil and finally he said if there's an oil seepage they normally remove the gearbox from the engine and add some sealant from inside of the side case and it may take 6hrs and their rates are very expensive. So I want know is true?? I can't change gearbox oil without adding sealant??? Or if I change oil seepage can be worse than now??

in the US we never add sealant to a trans mission just change the oil and be done with it. I have no further comments or suggestions.