Lyme disease is diagnosed clinically based on symptoms, objective physical findings (such as EM, facial palsy, or arthritis), or a history of possible exposure to infected ticks, as well as serological blood tests. The EM rash is not always a bull's eye, i.e., it can be solid red.
Rule of Thumb for Changing Filters. The rule we have followed for 18 years in the filtration industry is to change filters every 6 to 12 months. Six months is almost always optimum, especially in commercial/office settings, and twelve months is as long as you want to go no matter what.
Comments. 1  Posts: 618. Yes, you should change the coolant now. 2  Posts: 212. follow the owner's manual.usually every two years is the norm.i always use distilled water with the new antifreeze.you'll have fewer deposits in the radiator over the long haul. 3  Posts: 2,171.