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.
Most people believe that a 5w30 oil is good for cold weather use because it is a 5 weight oil in cold temperatures and a 30 weight oil at high temperatures. On the surface this might seem to make a certain amount of sense.Naturally, a 5 weight oil would flow better than a 30 weight oil.owever, a 5w30 motor oil will be thinner than a 10w30 motor oil when subjected to the same low temperature conditions-because the W number is lower. This is an indication of better cold weather performance. In other words, a 5w30 flows better in cold weather than a 10w30 motor oil will.