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Old 10th September 2010, 19:33   #26
kaiser
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75 Tourer 2.5 Auto, 1.8T, 75V8ZT

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Quote:
Originally Posted by Matt1960 View Post
Kaiser
But what you are suggesting would make sense to me, except that even on a cold day, after about 10 miles or heavy load, the engine DOES get up to thermostat opening point of 88c.
This means that at this point the coolant starts circulating around the radiator, does it not?
All the stat does is limit the flow of coolant around the radiator at a set temp.
It might be that even with a 92c stat the engine might still not get hot enough to open this stat, but my gut feeling is that it would.
Matt
Yes, Matt, it does.
But, you have then laboured the engine to get it up to 88 degrees. Having a hotter stat in it will not have changed your experience for the first 10 miles at all!
What you would like is a car that got to that temperature after, say 2 miles, I guess?
If you want that, switch the heater off (then there is no flow of water out of the engine at all) and reduce the outside cooling of the block, by blocking some of the cold air around the block.
A piece of cardboard in front!?

You see the problem/solution?
The stat itself does not figure at all for the fisrt ten miles in your case.
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