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There is a tool you can get. It has a reservoir and a bubble on the top. Suck it full of coolant and you can see your ratio and what temperature it is good to freezing and boiling wise. The primary job of coolant is to keep your cooling system from exploding in the winter. It does help to increase the boiling point, but pure water will typically boil at ...


2

My aunties Polo had it's radiator replaced and the mechanic who completed this job used pure water. That winter, the water in the radiator froze and because ice expands, when it melted and turned back into water, it leaked out of the now broken radiator. Antifreeze performs several jobs in the cooling system. It increases the specific heat capacity of the ...


4

While I won't say a cowl was never used for cooling the engine bay (I'm sure someone has done that), it really won't do much for cooling (as in to draw air out from and engine bay) and here's why: As your vehicle is travelling down the road the air travelling around different parts of the vehicle creates high pressure areas. The two biggest of these are the ...


3

Hood cowls can help engine cooling when properly designed. But this is not something most drivers will ever need. In most vehicles, cold air is ingested into the radiator at the front of the vehicle. The now warmer air is then passed along the engine block (not a great design, by the way), and then exits mostly low down underneath the chassis. This is ...


1

Any radiator needs air going through the radiator fins to exchange heat and cool it down and its fluids that runs in it. If the cowl hood directs air to the radiator (engine radiator, oil radiator, intercooler, etc) or to a part with fins (ex: some oil pans has fins on it to help cool the oil) and are the main source of air flow, then the cowl hood helps ...



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