Keeping a German car's battery alive through a Dubai summer
Coolant hoses and the water pump are the heat items; on air-cooled and early water-cooled cars the oil cooler lines are worth inspecting every service. For the battery specifically: park in shade where you can, drive far enough to actually recharge rather than only starting the car, and have it load-tested before summer rather than after. A battery that reads 12.4 volts at rest can still fail its load test, and the load test is the one that predicts the morning it does not start.

