English term or phrase: filed on even date herewith. French translation: depose(dÃ©posÃ©) e a Ã  la meme mÃªme date que. le present prÃ©sent document
Quick Answer. In most cases, a vehicle's coolant should be changed roughly every 24,000 to 36,000 miles. A driver may want to change his coolant more if he often drives in hot temperatures. Continue Reading.
Anyway, yes coolant does wear out and needs to be changed. How often is a function of what type of coolant is in the system. I think that a '98 Chevy will have Dex-cool in it (Orange in color) Dex-Cool is supposed to be a 5 year 100,000 mile life, but there are some people that don't believe it.