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I know that the synthetic has better friction magic and all,
That could well be the whole reason it is required. Synthetic oil produces less drag. So, it eats less power. Hence, the engine runs at slightly less throttle at a given speed, reducing the emissions.
It's a bloody shame what happens to technology when politicians fancy themselves to be engineers....
Let's hope there's intelligent life somewhere in space 'cause it's buggar all down here. -- Monte Python
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