The best way to do it is to lift the car with a trolley jack, and then place axle stands under the recommended points (shown in the Haynes/Bentley manuals I'm sure).<P>Changing the oil is so easy on the V70 because they have put the filter so it is horizontal, which means no splashes, and you can fill it will oil so it takes less time to prime when you switch on the engine.<P>Be very careful how tight you do up the sump plug because the sump is aluminium, you shouldn't use a copper washer as this takes too much force, it should be an aluminium washer.<P>The air filter is straightforward to, there are 6 or so clips round the air box which you can just push off with your finger or a screwdriver, then the top lifts off the box, and you can swap the filter.<P>