Asalam ul alikum
I have a Suzuki cervo 660 cc AUTOMATIC TRANSMISSION , i bought the car at 32,000 km and now the car is at 74,000 km without changing ATF. Few days ago my car started jerking on gear changes , so i thought of changing the transmission fluid( at that time i didn't new that the only way to change the complete ATF fluid was only by opening the automatic transmission fluid sump and then cleaning the gear filter) then while changing the fluid i thought the whole fluid was replaced with ZIC ATF III but actually it had mix with the remaining fluid in the transmission, so after changing the fluid there was no improvement at all ,now yesterday i cleaned the filter and drained out the whole fluid and pour caltex texamatic 1888 about 2.4 liters of it , but after that there was only very slight difference in gear changes not drastic change .
QUESTION :
1)What might be the cause of gear jerking on gear changes ??
2)what is the automatic transmission fluid capacity of 660 cc car??
3)should i add liqui moliy ATF additive , would it be any good ??
4)what else can be done to improve the gear changes ??
THANKS