Urinary retention is the inability to empty the bladder. Dysuria means difficult urination. The absence of urinary output is called anuria. The inability to form urine is term â¦ ed anuria.
Some experts recommend changing your air filter as often as every 3,000 miles (4,828 kilometers), along with changing the oil [source: 2CarPros.com ].Others say that's a little too excessive and that you should simply use your judgment in visually spot-checking the air filter and change it out when it looks dirty.ome experts recommend changing your air filter as often as every 3,000 miles (4,828 kilometers), along with changing the oil [source: 2CarPros.com ].
Also be aware that your filter manufacturer might have a different recommendation from your HVAC unit manufacturer. Choosing how often to change your air filters can depend on several factors: Type of filter your A/C system requires ; The overall air quality of your North America area home ; Pets â Birds, cats, dogs, hamsters (do you have one?), etc.