Castrol 0W-20 Edge is $9.98 per Quart. Have never found it in the 5 Quart Jug.
Mobile 1 0W-20 is $25 for 5 Quarts.
It is the Energy Saving type.
Well the Mobile 1 meet the warranty requirements?
Assuming Sonova Beach is somewhere in the US and that your manual is just like everybody else's: page 6-21My manual (2013) doesn't specify Castrol, just 0/20.
Mobil 1 0w20 does meet the ILSAC GF-5 specification according to the Mobil 1 website.From page 6-21 of the 2013 owners' manual: Only use SAE 0W-20 oil with the American Petroleum Institute (API) symbol and ILSAC GF-5. If Mobil 1 meets this spec (which I'm sure it does) then it meets the warranty requirements.