I have 94 previa and what is oil level on the dip stick is it between low and high level cos i fill oil up to high level and i fell like i dont have much power to run and what is exactlycapacity

I would guess its low on oil do to the age of the vehicle more then likely the seals are drying out and you have a slow leak transmission oil is vary thin oil .
Look for drips and oil at the points ware any shaft goes into the transmission.
It dosen't have a dip stick but mid way on the transmission their will be a plug remove this and fill it up till it starts to flow out so fill it to the plug level .
Then take it to a shop and get it serviced its like 100 bucks or plan on getting a new vehicle

1. Turn off engine ,
2. Take of oil cap on engine
3. Put in a little oil in oil filler hole of engine.
4. then pull out the oil dip stick from engine
5. and clean the dip stick on a rag.
6. Put dip stick back in engine
7. pull out again and check the level showing on the dip Stick
8. If level is too low on dip stick and is not at full level go back to step 1

These steps ensures you avoid over filling the engine with oil

Tip for beginners
The 4 litre oil bottle is way too much oil for an engine to handle.
If you have a full 4 litre oil plastic bottle square shape . hold the bottle on its side to pour the oil out slowly and smoothly.

The dip stick has markings on it showing the level it should be at.

dip stick marks are either lines across the flat part high or low, a series of crosses across the flat part either end is high or low or 2 holes indication low and high level

look on dip stick you should see cross hatched area with add oil or oil full mark.if you wipe oil dip stick with a clean paper towel and dip stick look dry no sign of oil add little oil at a time see if oil level reach add oil mark or the full mark.if oil is low. low oil light will turn on if bulb is blowed but if dip stick look dry oil level could be low,add little bit at a time dont over fill.

Pull the drain plug, change the oil filter, replace the drain plug. Add oil until the dipstick reads full. Start the engine and make sure the oil light goes out. Check for leaks around the oil filter with the car running. Recheck the oil level, add as necessary. Let me know if you have any questions and I'll do my best to answer them. Thank you for using FixYa.com!

I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_d728a59f986299fa

I am unfamiliar with exact car, however, It is not unusual for transmission oil to be put in via the the transmission dip stick tube - do not confuse it with the engine oil dip stick tube. Do it slowly and make sure you dont over fill or you will eventutally blow your transmission box seals or worse. Let the oil settle before checking levels too because it is easy to misread the dip stick when you have used the dip stick tube to fill oil in.

LOOK UNDER THE HOOD LOOK ON FRONT VALVE COVER THATS WHERE OIL FILL CAP LOCATED.YOU HAVE A OIL LEVEL DIP STICK BELOW THE FRONT VALVE COVER.LOOK ON THE OIL LEVEL DIP STICK WHEN ADDING OIL DONT OVER FILL THE FULL MARK LINE ON OIL DIP STICK THAT WHERE YOUR OIL LEVEL SHOULD BE DONT GO PASS THE FULL MARK.

You refill the transmission through the dip stick tube. Make sure you don't over fill the transmission though, that's just as bad as having low transmission fluid levels.

Check transmition fluid is via the trans dip stick located were the engine meets the tranny.. Dip stick should be labled transmition with the engine hot and car in park. pull dip stick out wipe clean. reinsert into tube fully then remove. the highest oil level is the reading level is reference to the stamped marking on the dip stick indicating fluid level "high or low"