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.
If the 0w20 is cheaper than the 5w20, certainly go with the 0w20. 0w20 is only available in synthetic, and as a result many cars do not put it as their recommended oil. The 0w20 may give you a slightly better fuel economy in the winter.s stated, the W is designating a winter viscosity. Viscosity essentially means resistance to flow, the higher the number the higher the resistance to flow. A single weight oil, say SAE 40, is saying the viscosity of the oil is 40, which is a higher number than say, 20 or 30.