Hey friends. Winter is pretty much here, and if it is a repeat of last year this is something that will be useful to have. Also did not see a DIY in this thread. I unfortunately do not have a heated garage at home. It scares me a little to start up when temps are below 0. Decided to go pick up an OEM block heater from a local dealer since neither the OBS(2.2) or Saabaru(2.0) came with one factory. Looking for a little advice on the matter. If none is available, I may just DIMS and do a little write up. Those of you that do have them. Is it totally sweet? Was it a major PITA to install? Will I need to drop all the green stuff? Will I then need to add more and burp? Thanks!