Heh, the goal is to get the engine above 200-210. 180 is probably causing premature wear and going to make it run bad when things start heating up...
I don't want to affend anyone here, but I have run my engines like I stated for years and I have never lost one yet. I have race engines that are going on 5 years old now and the pinch is still like new and motors run strong with no issues at all. so peoples theories with temp and to cold can hurt your engines is a crock or crap. I know many pro drivers that run there motor under 200 degrees on warmer days. I have a 2.5r that is three years old now and it runs 180 to 190 consistantly and has never given me a problem. and you read alot of others post with people running 250 to 270 and there complaining with problems with the motor is doing this or that, I have never had them issues why because i run them right where they should be. I also read the glow plugs just like you do a spark plug by the color. and my plugs always read optimal a nice light grey color.