Each 90000 miles.
4 cylinder Camry's mainly come with timing belts which should be changed around 100,000 miles, v6 Camry should have a timing chain
The Owners Manual states at 90,000 miles.
Must be changed every 90,000 miles.
Every 80K miles, 100K max.
yes and every 90,000 KM should be changed
No, you can't do that.
A broken timing belt on a 6 cylinder Camry will not harm the engine but it will stop it completely. Timing belts should be changed every 80,000 miles as preventive maintenance.
I think they recommend to change it each 160-180K miles.
The 2.4 liter four cylinder engine in a 2003 Toyota Camry has a timing CHAIN
Toyota Camry 97 has a timing belt that should be replaced every 60,000 miles.
No, you do not need to that. Unless the one you have is failing.
No, it's not OK. You should use at least 5W30. In summer you can use 10W30.