What a thermostat does is that it gets the whole engine warm at about the same rate.It kind of balances the heat,and makes the engine work better,especially a Diesel.You are right about it being hotter and sealing better. Now,what are you having a problem with?Loosing coolant?You dont say why you dont have a thermostat in it.You dont say if you can see where the coolant is leaking out or if it is. You could put a thermostat in and see if that fixes it.You could see if you have any water leaking to the outside,or into the oil,you could pull the exhaust manifold off and see if one of the ports is clean which would mean its getting water from that cylinder. Diesels run better when they are about 190 degrees like somebody else said.Since they dont have spark plugs it takes heat to ignite the fuel,and at 190 degrees is how they are made to operate.
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Today's Featured Article - A Lifetime of David Brown Tractors - by Samuel Kennedy. I was born in 1950 and reared on my family�s 100 acre farm. It was a fairly typical Northern Ireland farm where the main enterprise was dairying but some pigs, poultry and sheep were also kept. Potatoes were grown for sale and oats were grown to be used for cattle and horse feeding. Up to about 1958 the dairy cows were fed hay with some turnips and after that grass silage was the main winter feed. That same year was the last in which flax was grown on the farm. Flax provided the fibre which w
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