Hello, I am about to make myself independent with an engine oil heater and want to find out how the interest in this is. It is more for the cold regions and has the effect that their engine is spared. The aim is to produce a simple and cost-effective variant that is different from 220 volts. An extension cable is no longer necessary, as it is offered e.g. in Eastern Europe. Of course also with the heating cartridge the possibility exists it is a radio control or timer to use that would increase the cost factor and should lie in the measured of the customer. Therefore, the design which is offered is relatively simple, radio or timer there are in accessories or electronic stores. ( e.g. Conrad Elektronik ) We would like to address with the product people who do not own garage or auxiliary heating or just want to spare the engine from wear in the cold season The oil draining screw will be at oil change The heating cartridge is integrated. It is operated over 12 volts. Directional value: At an outside temperature of -5°, an oil quantity is heated from 3 l by the heating cartridge to a temperature of +10° by switching on the heating cartridge for about 3.5 minutes. By a currentless after-time of one minute, the oil reaches the temperature. If interested please mail