Sucking out the oil

[ScottD3]

Did a oil service on a V10 Touareg this weekend and it's recommended to suck the 13 litres of oil out via the dip stick and that's how we did it.

This can't be the best way of removing the oil from the sump can it?
Surly there will always be half a litre of old, sludgy oil at the bottom and over time that will just get worse, thicker and sludgier?

What is people's view on oil changes via sucking?
Any evidence to say its a bad thing or its better?

 

[AlexGSi2000]

Personally I'm not a fan of it - I have no evidence to prove this but I would expect there would be some sediment left at the bottom of the sump.

 

[jojo]

What's wrong with removing the sump plug for the same job? It's recommended doesn't mean you MUST do it that way?

 

[ScottD3]

What's wrong with removing the sump plug for the same job? It's recommended doesn't mean you MUST do it that way?

That's true but we could not find the sump plug and he had the kit to suck it out.
So we did.