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Sorry Gary didn't mean to dis you, you posted during the time I was still writing and I didn't see it - I agree it's nice to see the oil churning about and that there's enough of it still.??

Without the clear cover I would never have known that one of the oils?I tested (Lucas 75W-140 gear oil ), touted as being a '...synthetic gear oil...', almost instantly (<5sec) turned white (air/oil emulsion - which does not lubricate well at all).?

I was testing mainly 'synthetic' oils as these normally lubricate better, but found that? the word 'synthetic', legally, has no defined meaning in relation to oil.? In fact it's not used by the American Petroleum Institute, who control oil products in the US, for that reason. Anyone can call their oil 'synthetic' if the least bit of it is synthesised and, let's face it, the additive packages that all multigrade oils contain are all synthesised. Let the buyer beware - jv? ?