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Old 08-02-2017, 01:55 PM   #15
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Join Date: Oct 2008
Location: Keighley, West Yorkshire
Posts: 3,059
Subframe: Watson
CC: 1796
Make: Rover
ECU: Standard

The localised boiling is also reduced by the small extra holes we have been suggesting in the thermostat. To give a quicker warm up, Rover didn't have any holes in it. So when it opened as the car warmed up, a large quantity of cold water would rush into the block from the radiator. This isn't good as creates hot and cold spots. It takes about 1-2 minutes longer with holes added to reach normal temp, but has to be better overall.

These small holes just allow a small amount of water to constantly flow around the engine and help keep it cool. I can honestly say that I think the waterless coolant is not needed, but I am interested in the result though...
If tha does owt fo nowt, olas do it fo this 'en.

Last edited by AGoaty; 08-02-2017 at 02:04 PM.
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