LS430 transmission fluid type, quantity?

[lnguyenh]

I want to change the transmission fluid on my 2001 LS430. I have searched this forum but couldn't seem to find a definite answer.

Could someone please let me know

1. The type of transmission
2. The type of transmission fluid
3. The quantity of fluid I should be buying
4. Where to buy transmission pan gasket (I bought the filter a while ago)

My friend works at Toyota dealership and although he thought the Toyota transmission fluid would work on Lexus, I have my doubts.

Thank you very much in advance.