Sounds like oil filter is the least of your problems
Maybe "mileage" isn't a proper determinant for whether the air filter needs to be changed?
Your tank filter should be changed every month. If your filter becomes clogged, it should be changed right away.
In line filters are directional. check that filter was not installed backwards look for arrow on the side of filter. arrow should point towards engine an away from fuel tank
Think about the filter as the Trash can for your engine oil. So YES the filter holds the trash from your oil so it MUST be changed.
The oil provides lubrication for all the moving parts within the engine. It also helps in cooling the engine. The oil filter cleans the oil of all contaminates. As stated. The oil filters job is to clean the oil. But it should be changed at every oil change. While cleaning it builds up deposits of crud in the filter. Some filters have a bypass valve. That will dump dirty oil back into the engine when they are clogged up. This is not good but it does it to save the engine. But if you change the filter as you should this will not be a problem The air filter has the same job for the intake air. A clogged air filter will cause poor performance of your engine. So keep it clean and changed on a regular schedule. Never run an engine without a filter. This can lead to major engine damage.
Filter and fluid should be changed A.S.A.P. Y-THINK-Y
No, it should last the life of the engine if you change your oil/filter as outlined in your owners manual.
Depends on engine displacement, but usually 4 or 5 quarts (including when the filter is changed).
When it is dirty.
When it is dirty.
At every 5000miles or 8000km engine oil & filter,primary fluid and transmission fluid should all be changed on Harley-Davidson motorcycles.
Yes - probably a long time ago