<Don Ekhoff wrote: <Hope this experience is helpful. I just cringe when I hear of people <starting their cars every week as a way of keeping them preserved. Don, It sounds from your post that you are only opposed a start up without reaching operating temp. So can one assume that you are more in favor of a periodic start-up *only* if the car reaches a good hot running status? A simple start up and run for a few minutes is certaintly not a good idea, I think everyone would agree to that. However, the question for the 4-6 month storage crowd is: Is starting the car and letting it run for at least 1 full hour (or more) harmful or hurtful to the car? If the car runs long enough for the cooling fans to activate then the system is doing the same thing when you drive it during the summer. Albiet the car's clutch,brake and transmission system are still not being used. Look forward to a response Thanks Tom #005732 MT