the regulator is not a service item...the filter every year or so is a good idea....more often in the SAHARA...also
You should be able to find a shop manual at your local library with the right info...make copies as they are usually only in the REFERENCE section....good luck:)
When it is dirty.
When it is dirty.
The Aprilaire filter should be changed every 6 to 12 months for optimal performance.
Pre-filter for what? You posted this question in the Fuel Filter category. So I must assume you mean the pre-filter on the fuel pump. That is changed when the fuel pump is replaced.
Change the oil filter every time you change the oil.
The fuel filter.
whenever you change the oil
I recommend you change it every 75,000 miles.
Depends on which filter you are asking about. Oil Filter = Every 5,000 miles. Air/Cabin Filter = Every 30,000 miles. Fuel Filter = Every 50,000 miles.
An air purifier's filter should be changed every year, with the pre-filter cleaned or replaced every few months, depending on the conditions that the device operates in. Always follow the manufacturer's instructions.
The charcoal filter in a fish tank should be changed every 2-4 weeks to maintain water quality and keep the tank clean for the fish.
A Bionaire humidifier with a permanent filter will never need to be replaced. Yet it is necessary to make sure that the filter is cleaned properly on a regular basis.