Lucas Oil makes a product that they say will allow you to use regular fuel. I believe the product is called Tune-up in a bottle. It should be on their web site. But you may want to contact Lucas Oil directly with this question.
You take it to a certified Jaguar service center and put them to work. I would if I trusted them.
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While a 1998 Jaguar XJ8 is designed to run on premium unleaded gasoline, using regular gas may lead to reduced performance, fuel efficiency, and potential engine knocking. It's recommended to use the manufacturer's specified octane rating, typically 91 or higher, to ensure optimal engine operation. Using regular gas occasionally may not cause immediate harm, but for the best long-term results, sticking to premium is advisable.
I have a Jaguar XJ8 1998. the bolt pattern is 5X120
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You can purchase a Jaguar XJ8 at a local Jaguar dealership, or you can find available Jaguar XJ8s on the sites Auto Trader or Ebay Motors and purchase from the sellers.
the Jaguar XJ220 claims a top speed of 217 mph. The XJ8 manages 150 mph
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transmission fluid almost always goes in the dipstick tube
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