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.
Often times a manufacturer will suggest two or more motor oil viscosities for an engine, such as a 5W-20 or 5W-30, based on several different factors -- including temperature. The reason for this is that engines often need a different viscosity based on operating conditions.or example, 10W-30 oil will thin out at higher temperatures faster than 10W-40 will. The owner's manual will advise the best viscosity range and the owner can then work within those parameters. With the right viscosity in mind, it's time to start shopping for a type of oil.