Calcium compounds are widely used. There are vast deposits of limestone (calcium carbonate) used directly as a building stone and indirectly for cement. When limestone is heated in kilns it gives off carbon dioxide gas leaving behind quicklime (calcium oxide).
How to Change Transmission Fluid. Transmission fluid needs to be changed from time to time in order to extend the life of the transmission, usually every 30,000â60,000 miles (48,000â97,000 km) (sometimes more â check your owner's manual for service intervals).
Save. If you have manual transmission, you need to change the transmission fluid on your Volkswagen Beetle every 60,000 miles or four years. If you have automatic transmission, you should change the transmission fluid every 100,000 miles or five years.emove the drain plug and allow the fluid to drain into the pan. Connect the plug once all the fluid has drained into the pan. Remove the fill plug located at the other side of the transmission case.