Most Toyota shop manuals specify an oil consumption rate of up to 1.05-quarts (1.0 L) every 932-miles (1500 km) as within factory tolerances. Accordingly your engine is nearly 200% above this acceptable burn rate. That being said late 1990s Toyota engines have well known issues with sludge buildups that may be rectified through engine flushes, ring-pack clean-ups, and the use of Group IV synthetic motor oils. Such ring pack build-ups can easily increase consumption on an otherwise reliable Toyota powertrain.
For about the next six years dependce on its condition
About 670 miles.
Typicaly all Toyota timing belts should be checked every 10,000 miles and replaced every 50,000 miles it all depends on engine use and driving styles. If you do replace it buy an after market nitrile belt, some of the longest lasting belts.
I'd flush every 100,000 miles normal driving. every 50,000 miles for hard driving
on average, every 5,000 miles. More or less, depending on your driving style, weather conditions and type of oil.
That depends. Are you driving a Moped, a Toyota, or a Peterbilt ?
Every 5000 miles, is when I do it on mine.
every 130,000 miles :)
every 200,000 miles
Every 60,000 miles.
Toyota recommends replacing the belt every 90,000 miles.
Every 2500 to 3000 miles is highly recommended