Heat Ratings. The output of a radiator is measured in British Thermal Units (BTU.s) per hour. (So is air-conditioning, come to that!) 3000 BTU is roughly equivalent to a 1 kilowatt bar heater, just to give you some idea.
Rating Newest Oldest. Best Answer: The difference between 5w30 and 10w30 is that 5w30 flows better at colder temperature. If you live in a place where it gets cold often, or during the winter time, you will get better results using 5w30.Otherwise 10w30 oil is good enough, i usually use 5w30 all year round.ating Newest Oldest. Best Answer: The difference between 5w30 and 10w30 is that 5w30 flows better at colder temperature. If you live in a place where it gets cold often, or during the winter time, you will get better results using 5w30.
Oil Weight. The numbers in a name like 10W30 refer to an oil's weight.. This is a measurement of the oil's viscosity -- how thick it is, and how quickly it moves. Lower weights mean a thinner oil; higher weights mean a thicker one.In a car's engine, a thinner oil is more useful at first, when the car's just started and the oil must flow quickly through the engine.But as the engine heats up, a too-thin oil can be a problem.il Weight. The numbers in a name like 10W30 refer to an oil's weight.. This is a measurement of the oil's viscosity -- how thick it is, and how quickly it moves. Lower weights mean a thinner oil; higher weights mean a thicker one.