Have a 2012 Audi A3 TDI diesel and up until 2012 they offered an engine block heater but for my year they don't. Can I install the engine block heater from the 2011 A3 TDI on my 2012 A3 TDI? Or must I install an aftermarket engine block heater? Any suggestions on which aftermarket heater works best for my 2012 Audi A3 TDI diesel?Have a 2012 Audi A3 TDI diesel and up until 2012 they offered an engine block heater but for my year they don't. Can I install the engine block heater from the 2011 A3 TDI on my 2012 A3 TDI? Or must I install an aftermarket engine block heater? Any suggestions on which aftermarket heater works best for my 2012 Audi A3 TDI diesel?