Hi scotty, how are you? greetings from Israel.
I have 2001 corolla ATF with 294,000 km. I changed the gear oil and filter thanks to your videos. and i don't know if i need to check the oil at working temp with engine on or off.
thanks a lot, for all your good contents.
The engine should be running and warm but not too hot. Ideally check after driving the car for 5 or 10 minutes. If it's too hot the oil expands too much. Leave the engine running. Shift to your lowest gear, then shift up through all your gears, one at a time, until you get to Park, then check the oil. Pull out the dipstick, wipe the oil off, stick it back in, then pull it back out and check.
when I actually checking the dipstick, the car needs to be on or off?
The car should be on.
thanks a lot for the detailed answer
The procedure is described in the owner's manual.
It will probably say check warm, on a level surface, and in a certain gear.
I checked all the book (and my car book too). except the oil recommendation and how much to fill in, there in no more instructions.
shame on Toyota for that
The reason it's not in the manual is because it's one of those "sealed" transmissions with "lifetime fluid" that Scotty talks about all the time, and Toyota expects you to take it to a professional to check the fluid. There is only one dipstick under the hood for engine oil. There is no transmission oil dipstick; you have to put the car on 4 jack stands (the car needs to be level) and check from under the car.
it's now sealed transmissions, and I do have 2 dipsticks under the hood.
and if you will read my question again, you'll see that I change the transmission oil. so I do know where the transmission dipstick is. {black}:nonoise:
And to likely start an argument... if you check the expansion coefficient of trans fluid, you'll find it is no where near enough to cause the level rise on the dipstick. I'll leave ya'll to think about why the level increases as much as it does from 25C to 85C ; )
This is not relevant to OP but only food for thought for mods and mechs ; )
Expansion of transmission parts and dispersed oil on all surfaces. That is why the shifting gears before measuring and making parts at operating temps.
I'm going to say that the expansion is not due to temperature, but rather aeration.
Check the transmission fluid when the fluid is at normal operating temperature aka after a drive or after you run the car for a few minutes.
The engine should be running and warm but not too hot. Ideally check after driving the car for 5 or 10 minutes. If it's too hot the oil expands too much. Leave the engine running. Shift to your lowest gear, then shift up through all your gears, one at a time, until you get to Park, then check the oil. Pull out the dipstick, wipe the oil off, stick it back in, then pull it back out and check.
The procedure is described in the owner's manual.
It will probably say check warm, on a level surface, and in a certain gear.
I see only the oil recommended by the company and how much to fill in
the engine should be idling in park
https://itstillruns.com/check-transmission-fluid-corolla-4794845.html
https://www.youtube.com/watch?v=Lc8eIBEk50A
thank you man
Check the transmission fluid when the fluid is at normal operating temperature aka after a drive or after you run the car for a few minutes.
with the engine on or off?