Glow plugs are decent for quicker starts in most any weather,except really cold weather. I know people who live in palmsprings,ca who use glow plugs.They are not fireballs in the prechamber so to speak,they only assist the cold engine to start.You have to get fuel to the cylinders,if the fuel is anywhere close to gel,the glow plugs are useless.You need the heaters I mentioned awhile back.There used to be 12 and 24 volt heaters,find those or make your own, and wrap them around fuel tanks,lines,filters,pump,and engine.I used to hunt around the tamagani lakes,near northbay Canada before most of the vacation houses were built.I drove a mercedes and the glow plugs were useless in the dead of winter.I got pretty good at digging small pits,getting a good fire going in them and throwing a couple inches of dirt on the hot coals.Then pushing the mercedes over the pits and leaving it for an hour or so,it would start right up I learned that trick from an old french-indian-canadian guide..! Alaska was a new ballgame,we had to keep the rigs running all winter, there are plugs everywhere,well almost.If there is a way of insulating everything with a non-porous insulation,and with the use of the heaters,we might solve the diesel cold start problem in most cold weather.Ed is right about cold engine driving,most trips are short to shopping,schools,med-dental,ect. And countless stops and stop lights in the cities.By the time people get to the mall,grocery ect,the engine is either just warming or is still cold.This is and has been a problem in automotive engineering.Thus came the thermostat,egr systems,weighted exhaust pipe valves,engineered back pressure,and now computors. But the problem remains.It is very hard on an engine,the oil is cold and thick,the internal parts are running semi-dry, condensation forms.The trans,differential,wheel bearings,power steering pump,all areas using grease,wear more.The same can happen in extremly hot weather,the lubrications will loose! thier viscosity ie: become to thln or fail to coat the parts.To combat these problems more additives are created.Most of them are very toxic.stephen
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