Although new vehicles can run longer on the same oil than older ones can, and improvements in motor oil have extended its efficiency over longer periods of time, to be on the safe side, you might want to change your oil every 5,000 miles or every six months, whichever comes first.
A fog light has a special lens which diffuses the light and instead of sending a direct beam forward it scatters light broadly to both the front and and slightly off-set to either side of the vejicle. Many drivers put fog lights on thinking they are improving visibility when it is not foggy. This is wrong!!!
Ground fog is fog that obscures less than 60% of the sky and does not extend to the base of any overhead clouds. However, the term is usually a synonym for radiation fog which is very shallow; in some cases the depth of the fog is on the order of tens of centimetres over certain kinds terrain with the absence of wind.