I've just changed the oil and filter on my SV650.I used a pair of expandable pliers to get the old filter off as I wasn't going to re-use it.
I went for Motul 10w40 Motorcycle oil as I have used their oils before,with a Hi-Flow filter with a 17mm get-off from M&P Direct.
http://www.ebay.co.uk/itm/SV-650-S-X...IAAOSw8cNUS3LL
£28.19.
A little pricey but shes worth it
Ordered on Monday night.Said it should be here Friday 24th,Came this morning(Weds 22nd) 11 am ish.
Text alerts for when the delivery would be here as well
On my old CX500s I used cheap 10w40 made for diesel car engines semi-synthetic oil.Similar specs as Rotella T.As this engine is younger thought I would stick with the proper stuff for now.