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.
The higher the number the thicker the oil. The 5w and 10w are the viscosity of the oil when cold. It's actually formulated to be ligh â¦ ter weight when cold than when warm. A lower viscosity will move through the engine faster and lube it up quicker during cold start and warm up.Most manufacturers recommend 5w now in most all cars.he 5w and 10w are the viscosity of the oil when cold. It's actually formulated to be ligh â¦ ter weight when cold than when warm. A lower viscosity will move through the engine faster and lube it up quicker during cold start and warm up. Most manufacturers recommend 5w now in most all cars.