2002 Ranger....need flush or no?
Question.....I recently purchased a 2002 ranger 2.3l and I was thinking about flushing the coolant and possibly having the thermostat replaced. This vehicle has sat for long periods and only has 15k miles on it.....but being that it's 5 years old, should I flush or not? And how long does a thermostat last on average? Is it important to flush the system or is just a drain and refill good enough?