WD-40 is safe. I've been using it for years but I usuallyt put some ATF oil in the engine afterwards. I mainly use WD-40 when I take the engine apart and clean or mod it.D 40 (Water Displacement 40th try) removes the water to aid in rust prevention, (rust is also a horrible lubricant) then lube stuff.
Tweet. The color of sputum or phlegm, which is the mucus and sometimes pus discharge expectorated from the respiratory tract, is often an indication of the type of respiratory disease that gives rise to sputum production.ith infections, the green sputum will be more purulent (large amounts of pus) while in non-infectious inflammatory conditions, the green sputum will be more mucoid (large amounts of mucus). 1  Pneumonia â white, yellow or green. 2  Lung abscess â green, sudden accumulation of large amount of sputum if the abscess ruptures.
Coughing Up Yellow Phlegm. Infections, allergies or asthma can lead to an inflammation of respiratory tract and lead to an accumulation of inflammatory cells or leukocytes in mucus. This can cause phlegm to turn yellow. Thick yellow phlegm is a sure sign of a bacterial or viral infection. People suffering acute or chronic cases of bronchitis or bacterial pneumonia often cough up thick yellow mucus. Coughing Up Phlegm with Blood. Blood in mucus appears as red or brown spots. Bloody phlegm can be caused due to excessive smoking or high air pollution.