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The diesel from solidifying
The cab temperature from dropping
The radiator from freezing
The windows from misting
Explanation: In cold weather, diesel fuel can solidify as it starts to freeze. This is known as waxing. Waxing prevents the fuel from flowing properly and this can stop the engine from running.
Category: Vehicle Condition
References: The Official DVSA Guide to Driving Buses and Coaches: Section 2, The Official DVSA Guide to Driving Goods Vehicles: Section 2
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