I just purchased a 1997 Geo Prizm with 25K miles. The seller says the coolant was changed approximately 2 years ago and the oil a few months ago. ATF, brake fluid and power steering fluid all look very clean. Are these 16 year old fluids still good since they are in closed systems or do they need changed? Additionally, timing belt change is recommended at 60K miles, should i change it now or wait until 60K. Thanks, ToddB