It looks like you are already doing a great job. All I can tell you is preventative maintenance. Keep the oil changed, coolant full and clean, and all other fluids serviced. Also, keep filters clean such as the air filter, fuel filter.
THe engine in your car is a good one and will last a while longer if you contunue doing what you must have already been doing.
Let me know if you have other questions.
Joe
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Thursday, April 8th, 2010 AT 10:00 PM