When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
The owners manual provides the specification. Make sure the coolant you wish to purchase meets this spec. Colour or manufacturer's name is meaningless.
There is no OTC product that meets Jaguar's spec for coolant that I know of, and I have looked....bite the bullet and buy a jug of JAG coolant and make sure you mix it with distilled water only.