My 1992 lexus Ls 400 has coolant in the oil pan

castrol 10w 40w just like all toyota made cars

This job requires special tools and special training. If you lack either, you risk SERIOUS personal injury. Injury comes VERY EASILY!

You need to address oil levels, proper and legal refrigerant recovery, system evacuation, and recharge.

You were planning to also replace the receiver/dryer, correct? It also needs the oil in it measured and incorporated into the amount of oil (in %) that would need to be added. FAILURE to address these and other issues will guarantee premature system failure and likely compressor damage.

Take this job to a qualified shop.

Sorry

Here is a diagram that should help you out.

du maste lexus aterforsaljare ga till delar department. carry din identifiering och bilregistrering serienummer de kommer att ha dig en gjort.

An oil pan gasket is what you will need to stop this leak for it is leaking around the bolts. This is common to all oil pan bolts when they get old

the pressure hose runs along the oil pan .

Yes, a non-certified person could replace something on the car. The person has to understand what he/she's doing, though.
Best way: open the radiator cap and drain the coolant. Leave the radiator cap off until done.
Place a container under the radiator to catch the coolant.
Replace the thermostat, and refill the radiator.

You can lower your post-install failure rate if you always check to make sure there is no debris or obstructions in the trans cooler before sending the vehicle down the road. Always remove the pan and check for debris/burnt oil, on any used unit. Makes no sense to install one with symptoms of failure already there.

I'M NOT 2 SURE BUT I THINK YOU HAVE 2 REPLACE THE WHOLE HUB WITH A NEW BEARING PRESSED IN IF NOT THE WHOLE SPINDLE

the little metal particules in an used transmission is normal but in the oil pan have a magnetig tip for catchit, remember also to change the oil strainer too