I need to know how many litres of automatic transmission oil goes into a 2004 hyundai elantra have put 4 litres in but dipstick shows its still low

manual transmissions don't normally use flowing fluids for lubrication they use gear lubrication oil/grease these are heavy hi viscosity (maple syrup like) and don't flow like water like automatic trans do , ck'ing there level is a bit specific to what type of lube they use , a Hyundai uses Oil so there will be a pipe plug up on drivers side of trans near top (sorry no dipstick) un screwing this will allow one to use a Non metal object to stick in and see if oil is up to hole (reaching it) , of course obvious(wet look) signs of leakage (at drive shaft and clutch cover ) are a sure sign you have a leak and level is low , wet clutch covers aren't allways a sign of a leaking transmission but to one of a leaking clutch slave cylinder(common problem on Hyundai's) this is the device that moves clutch inside , ck oil level in clutch master cylinder to confirm this

Automatic transmission :Genuine Diamond automatic transmission fluid SP-11M.

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For Manual transmission :SAE 75W/90 gear oil

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To replace the fluid.There are no special requirements here. Drop the pan being careful not to damage the pan gasket with a container to catch the old fluid underneath it, replace the filter, replace the pan and then add about 4 quarts (via the dipstick hole) of the required Hyundai SP-III fluid you can get at the dealer. Double check the level with the engine warm and in park position. Be aware that your transmission uses a specific formulation of transmission fluid, available at the dealer. It is a bit more expensive than off the shelf fluid like Dextron, but you are only changing it every 30K, so the cost over time is minimal. -----------
this should help.thanks.Helpmech

is on the side of your oil pan

Your transmission fluid is dangerously low (tranny is dry). The pops & jerks are the transmission
internal components trying not to seize onto each other due to lack of lubrication and/or overheating.
Low transmission fluid leads not only to loss of lubrication but lots of overheating (of the tranny).
The loss of Elantra performance (speed tops out at 55), is caused by power loss due to friction inside the transmission. All your power is lost overheating the transmission (toward destruction), instead of
being transmitted through the transmission to the wheels.

The 2004 Elantra takes Hyundai SP-III Automatic Transmission Fluid, with 8.4 quarts used in a
total refill - but just 5 quarts at a fluid change. For How-to transmission fluid change instructions:

http://en.allexperts.com/q/Hyundai-Repair-815/2004-Elantra-GT-transmission.htm

www.autozone.com claims that 2004 Hyundai Elantra can take these non-Hyundai ATF's:
Lucas Semi-Synthetic Multivehicle ATF
Pennzoil Muilt Vehicle ATF
Valvoline Maxlife Dex/Merc ATF
Castrol High Mileage ATF

small bolt at the side of the gearbox, you need to remove it and use a long hose to feed the oil into the box.

10W-30 grade oil is recommended for your car

check your owners manual and your transmission dipstick. most manufacturers put fluid type recomendations on the trans dipstick.

If you have not done so already, check the transmission fluid level. If you are low on fluid, there is a chance that adding fluid to the correct level may solve the problem. The fluid level should be checked with the car idling and the shift lever in neutral. There are two sets of Hi/Low marks on the transmission dipstick, one for Cold (car just started) and one for Hot (car running for 20 minutes or more). Use Hyundai recommended SPIII fluid. However, this does seem like a more serious transmission problem. Take the car to a qualified transmission mechanic.

If it has a 1.8l engine it should be 4.5 quarts.

sounds like the transmission fluid level is incorrect. Follow the instructions in the owner's manual. You'll need a funnel, rags, and Hyundai transmission fluid ($15 a litre in Canada)