srxtwins said:3.2 should be the right amout with filter. 4.0 is total capacity and would only be required in the case of a rebuild where the engine is completely dried out. At four you should be all the way past the gauge part on the dipstick.
I should add that if the dealer is putting in even slightly more than 3 L he will charge you for the full four,even if it all isn't in the machine.