Anyone have any tips for cheapest place to source the oil with the required specs for our cats or do people just source it online via ebay and such?

 

Jaguar specifies a particular oil for 5.0 cars. See your manual and read some of the threads here about problems with direct injection engines and oil life and timing chain life. If you plan on keeping the car, getting the correct oil may be much more important than the price.

 

Thanks Rob, I realize that I need the WSS M2C925-A 5W20, I just wondered if anyone had any previous success sourcing it somewhere at a reasonable cost