So I picked up a 2013 Jaguar XF 3.0 AWD Supercharged and modified it to 460 HP. ( Added a tune and Crank pulley) Jaguar Spec oil Jaguar Land Rover STJLR.51.5122 I have read the car requires C5? (not familiar ) so it seems this poil matches that spec. 7 qts for $ 100 plus shipping Ravenol data sheet lists the following Oil Specifications and Quality Standards: ACEA C5 API SN Resource Conserving ILSAC GF-5 Licensed: API SN Resource Conserving Formal Factory Approvals: Jaguar Land Rover STJLR.51.5122 Mercedes-Benz MB 229.7 Any thoughts on comparable oils in the US? Seems a bit hard to find.