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).
Do not overfill the system. You can repeat the flush one or two more times to get all of the fluid replaced with new liquid, but this isn't necessary. As long as you maintain your vehicle's transmission fluid, a partial change every 25,000 to 30,000 miles will suffice. Remember to seal the used fluid in a container and take it in for recycling. Check with your local recycling center to find out how to properly dispose.