I have a 2001 Toyota Tundra SR5-V8 with 130k miles. The only service that has been done on it is oil change, tires and brakes. My wife and I have decided to keep the Ole’ Girl’, the car, I am keeping my wife also, until she goes to the great auto paradise in the sky. I think that it is time to replace all of the fluids. I am wondering if it is necessary to replace the spark plugs and the spark plug wires even if the car is running fine.