Vinegar's acidity is what makes it such a good cleaner. Because vinegar is so acidic, it can counteract some icky buildups. It can dissolve away soap scum, brines left by hard water, and glue left behind by stickers.
The PCV valve is a control device which sends partially burned gases that come from the engine's crankcase to the combustion chamber. Its name, PCV means Positive Crankcase Ventilation and is one of the oldest and most used emission control devices.he PCV valve is a control device which sends partially burned gases that come from the engine's crankcase to the combustion chamber. Its name, PCV means Positive Crankcase Ventilation and is one of the oldest and most used emission control devices.
The AAV is a cylindrical-shaped object with a noticeable lip made from PVC or polyvinyl chloride fitted with rubber valves. The valve is one-way, meaning that it only allows water to flow out and not back in.he AAV is a cylindrical-shaped object with a noticeable lip made from PVC or polyvinyl chloride fitted with rubber valves. The valve is one-way, meaning that it only allows water to flow out and not back in.