I bought a used 1999 LS400 in July 2007. It had 68k on it and ran like a champ. I do not have the maintenance/repair manual so I don't know the maintenance schedule for the car. I am a commuter and drive about 30 miles to work daily. i now have 112k on the car and know it needs some maintenance. I changed the water pump and timing belt at 96k. What else should I be aware of in terms of scheduled maintenance?