i have three questions on 1996 Lexus LS400

first is i have a exhaust leak i think its a donut gasket infront of the cat.converter.2i have a oil leak but is the top part called the front seal or pan? 3 how do i get my temp.gauge to work?

Asked by for the 1996 Lexus LS400
1. it will have to be dropped to see if it is bad or the pipe may be bad and need to be replaced.

2. front or rear seal?? need more exact info.

3. needs to be diaged. could be the sender, wiring or the dash gauge.

yea i was told i need a gasket right above my cat. converter 2 i know i have a small leak but its not at the bottom of my oil pan its on the top side of my oil pan and thanks alot