Weather Maps and Symbols. On any given day, there's plenty of activity on a weather map. Frontal boundaries and the Highs and Lows are the prominent features on an average weather map you might see on the TV news. Let's take a closer look at what they mean. Cold Front. A blue line with points indicating the direction of movement.
Carbon filtering is a method of filtering that uses a bed of activated carbon to remove contaminants and impurities, using chemical absorption.Each particle/granule of carbon provides a large surface area/pore structure, allowing contaminants the maximum possible exposure to the active sites within the filter media.t is also used in cigarette filters. Active charcoal carbon filters are most effective at removing chlorine, sediment, volatile organic compounds (VOCs), taste and odor from water. They are not effective at removing minerals, salts, and dissolved inorganic compounds.
The Fram CH836 PL is the oil filter, and the Fram C1191A is the secondary fuel filter (the one on the engine.) Consumer Reports did a comparison of oil filter for cars some time back, and they found Fram to be the best quality filter, so that's what I use on my boat as well.The 40 page Perkins manuel only refers to changing out the one filter attached to the engine block-the '#1' I guess). Thanks again-It's a 2 1/2 hour drive to and from the boat-. would very much like to have all the filters, etc, I'm going to need before I drive down.