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.
What does Yellow Phlegm Mean. Yellow phlegm means that you are suffering from cold and flu or your upper respiratory tract is under the influence of some microbial infection. Dark yellow phlegm or thick yellow phlegm indicates an infection of lower respiratory tract or sinuses. It can cause an accumulation of the phlegm in your lungs and upper respiratory system and result in more serious problems. 2  Coughing helps in removing the mucus from your body. 3  Take some good expectorant instead in order to eliminate yellow phlegm or yellow green phlegm that is being produced.