Racebred
Core Group Members
unless there's a heater that's on all night! hahahahha!! you cannot expect the water temp to be 126deg all night right. 
anyways, it's always good to warm up the engine. From a cold start, the water temp is at ambient temp. The when the needle moves to the edge of the blue zone, it's 60 degrees C. When it reaches the middle point, it's 75 deg. Now the needle movement is not linear. At temp range from 75 to 125, the needle stays in the centre.
Normal operating temp for our car is about 100deg. +- 5, depending on whether you are cruising, waiting at a traffic jam, going fast and furious, etc.
at 126 deg, the water temp is considered slightly higher than normal, as usually at the traffic jam it should not go above 110 also. Only at the track will you hit such temperatures.
A proper warmup is essential for the longevity of the engine. And as you can see that the needle hits the middle mark about 25 degrees before the engine hits optimum temp (75 deg compared to 100deg), you actually have to slowly warm up the engine a couple of minutes more after you see the temp needle hit centre.
It's actually a very high pressure system, and I should point out that one should only open the radiator cap before a cold start. Even if you have switched on your engine for 30sec, dont touch the system and open the cap anymore. Wait for the next morning to check water level. This is as advised by the technical guy in PML.
Even though we are talking about coolent temp here, and not engine oil temp, it's a good enough gauge to see engine oil temp, as their temp seldom varies more than 5 deg C. So pls remember to start gunning your engine a couple of minutes after your needle hits centre. Try to keep the engine rev low, say about <4500rpm. You can drive off immediately, just dont rev it too high.
As for coolent, it only helps to raise the boiling point of water, and gives it a lower heat capacity, so that it can lose the heat faster. I dont think it can help stabilise the temp at all times, much less at an undesirable 126deg C.
hope this helps!
anyways, it's always good to warm up the engine. From a cold start, the water temp is at ambient temp. The when the needle moves to the edge of the blue zone, it's 60 degrees C. When it reaches the middle point, it's 75 deg. Now the needle movement is not linear. At temp range from 75 to 125, the needle stays in the centre.
Normal operating temp for our car is about 100deg. +- 5, depending on whether you are cruising, waiting at a traffic jam, going fast and furious, etc.
at 126 deg, the water temp is considered slightly higher than normal, as usually at the traffic jam it should not go above 110 also. Only at the track will you hit such temperatures.
A proper warmup is essential for the longevity of the engine. And as you can see that the needle hits the middle mark about 25 degrees before the engine hits optimum temp (75 deg compared to 100deg), you actually have to slowly warm up the engine a couple of minutes more after you see the temp needle hit centre.
It's actually a very high pressure system, and I should point out that one should only open the radiator cap before a cold start. Even if you have switched on your engine for 30sec, dont touch the system and open the cap anymore. Wait for the next morning to check water level. This is as advised by the technical guy in PML.
Even though we are talking about coolent temp here, and not engine oil temp, it's a good enough gauge to see engine oil temp, as their temp seldom varies more than 5 deg C. So pls remember to start gunning your engine a couple of minutes after your needle hits centre. Try to keep the engine rev low, say about <4500rpm. You can drive off immediately, just dont rev it too high.
As for coolent, it only helps to raise the boiling point of water, and gives it a lower heat capacity, so that it can lose the heat faster. I dont think it can help stabilise the temp at all times, much less at an undesirable 126deg C.
hope this helps!
