othello wrote:And I assume you would add the FPHE before the filter to give the filter the maximum benefit of already hotter oil?
No, I put it after the filter, as close to the IP as possible to minimize heat loss. The WVO before the filter is heated with TiH line. The WVO only needs to be >40-50F to pass the filter, so no need for max. temp there.
othello wrote:And do you then top this off with eletcric line heaters for the steel lines leading to the injectors? In my Mercedes the steel lines are apt to loose a lot of heat from the IP to the injector.
No, insulation works to prevent that for a lot less money. And I block a portion of the radiator, up to 90% depending on temps, and it makes a huge difference, more than any other item. A 176F thermostat should be fine, thats all I have used for 6 years on 3 different vehicles, and my WVO is always >160F at the IP.