|
It's a common misunderstanding that the first weight number in oil equates to the flow rate at some really cold ambient temperature. In fact, it's more like 100F, so living in a warmer climate isn't really relevant to the argument you were considering. 0W is designed for proper flow (in an LT1) and lubricate the engine bearings when you first start the engine, when pressure is the lowest. Were you to choose a 5W-40 oil, that would probably be OK even though the oil is a little thicker on start up. However, when you move up to even just 5W-50 (never mind 15W-50), the oil is significantly thicker at start up and will likely result in more engine wear at start up. While that doesn't matter if your car is only driven at the track, it probably does matter if you daily drive your car (a lot more start up episodes each year).
Hope this was helpful.
|