what's the advantage of SS lines? with brake lines you use SS to get rid of flex in the lines associated with the rubber ones. the drawback is that SS lines are less durable than rubber ones because the teflon inside breaks down faster and you hafta replace them more often. so for coolant/oil why do people want SS lines besides the fact that they look neat? i don't think flex in the lines is a major concern like when it comes to braking...

sorry if i'm missing something obvious

-marc