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 0 weight oil will get to the engine components quicker than the 10 weight oil, but in reality cold 0 weight oil is still thicker than hot 30 weight oil. On the other hand when the engine is cold, there is no difference between 10W-30 and 10W-40 oil.However when the engine is hot, the 10W-40 oil is thicker than the 10W-30. This is why single-grade oils are very bad. Straight 30 weight oil is way too thick when cold to properly lubricate the engine.n the other hand when the engine is cold, there is no difference between 10W-30 and 10W-40 oil. However when the engine is hot, the 10W-40 oil is thicker than the 10W-30. This is why single-grade oils are very bad. Straight 30 weight oil is way too thick when cold to properly lubricate the engine.