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Originally Posted by lukemillar
Quote:
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Originally Posted by northwind
Someone told me once that Castrol colour their oils according to grade and viscosity. This might be rubbish though.
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I like the idea of this - I recently changed mine with some Shell oil which is a dark honey colour. When you look at it in the sight glass, it looks almost black. I find this a little disconcerting... |
most oils are a dark honey colour when there new, its only once there used, they go black.