Radiator Expansion Water Tank Cap Compatible for Fiesta Focus C-Max Mondeo

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In the winter, engines need to be stopped from freezing up and causing irreparable damage. You may need a replacement car cooling fan, car radiator, expansion tank, or intercooler, and at Halfords we’ve got it all. Car Air Conditioning Note that I’m assuming a “classic” mechanical thermostat here. If its something more modern, perhaps controlled via satellite downlink from a CIA Cray Supercomputer at Langley, this may not be possible.) I suppose you could “tune” it with a blanking plate with a hole in it, to provide less but still some restriction.

I can’t say that doesn’t happen, but I would have thought it was fairly unusual, since thermostat removal is/was quite a common bodge/workaround for overheating problems. You can of course improve your personal cooling a bit with various supplementary fan and evaporative solutions. Look up “swamp cooler” if interested, though I doubt you want to get quite that elaborate.Coolant circulates through the engine and absorbs heat, helping keep the engine at the right operating temperature. I wouldn't do that, and I probably wouldn't buy the kit they use, but it should be possible to adapt another form of pump. The mechanic I used took another look at it today and has returned it to me stating that it is in fact a problem with the head, stating he ran some tests and found gas to be escaping and entering the coolant system. He has now offered a short term solution by saying he can apply some sort of leak repair stuff which requires the coolant system to be flushed then the additive put in with new coolant. Does anybody have any experience with this and if so, how long is it likely to withhold? My car is due to have it's MOT in February, how likely is it to pass this? I've done this a few times now on the Skywing. I don't much like doing it, but I think its less risky than your suggested laissez faire air alternative.

If you are not loosing coolant I too doubt if you have a head gasket leak. Yes the garage can test for gases in the coolant but if you have a leak then if the gas comes out into the coolant then coolant would pass the same way when stationary. and be lost.

The most obvious valid reason for replacing a water pump would be an overheating incident due to actual or suspected water pump failure . IIRC, the OP did not tell us the reasons for the water pump replacement, referring only to a coolant leak, but the reservoir blowing was said to follow-on from it,

If you had a water pump failure its a fair bet you had overheating. Head gasket or head failure is a common consequence of overheating, so no big surprise there.

Real MPG

Coolant also helps keep your engine working as efficiently as possible, helps keep its emissions low, and even helps provide that toasty heater air on cold days. Heater in a car acts the same as the radiator under the bonnet, which is why when the engine starts overheating its a help to use the heater in the car on max hot to help keep engine cooler The OP is unlikely to want to bother with that though, especially as he already has some blowing from the coolant reservoir so couldn’t easily detect any local boiling due to modification.