I am planning on changing coolant and thermostat on 03 LS 430. I already got the Toyota Long life coolant. They are proud of that stuff, $53 for 2 gallons. I am new to Lexus, but the capacities seem low to the stuff (American) stuff I have played with. 10 qts for coolant, 4.5 qts oil? I had a Lincoln Mark VIII with a 32 valve that took 6 qts oil! Anyway was also surprised that the Toyota dealer had to call the Lexus dealer to get thermostat part number, weird...Anyway, is there anything specific about the coolant change on these?? I have had some cars with bleeders, since the radiator was below top of engine, dont see one here.. Any tips would be appreciated. Also this car has 57K miles, dont see anything in manual about trans fluid change. If the stupid thing had a dipstick, I would change it myself. I have had a few cars with no dipstick, cant figure out why?? This was a $70K car new?? Any feedback on the trans fluid change. This car has always lived in South Florida, so I would think the fluid should be changed..