No, this is not true. Resistance heat cannot create moisture. Moisture is always present inside your engine and specifically within your oil. Use of our system will NOT result in corrosion because a Tanis preheat system keeps all of the metal parts that are above the oil level above “dew point” and as a result condensation cannot occur on these parts. Tanis preheat systems are not to be cycled on and off as this could cause the engine to go through “dew point” (timers and thermostats are not to be used).
