Just removed both the filler an drain plug on my 1.4 Fiat grande punto 57reg. An no oil came out so I set about putting new oil in, the handbook says it takes 1.7 litres to fill. But I’m not to the bottom of my first litre bottle of gearbox oil an it’s full. I though if not oil came out the drain plug it was empty an would require the full 1.7 litres to fill the gearbox ?? Any advice is great fully received.