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.
Â· just now. Report Abuse. That difference is the viscosity of the oil when cold. He wants to use a less viscous oil in the winter because it's a 1998, and in those older engine it's always best not to make them work harder, starting and pumping the oil through the pump.est Answer: The first number followed by the w is the winter weight of the oil so a 5w30 is more effective in a wider temperature range than 10w30.