For a 1988 Jaguar XJ6, you should use DOT 4 brake fluid, which is suitable for the vehicle's hydraulic brake system. It's important to ensure that the brake fluid is of high quality and meets the manufacturer's specifications to maintain optimal braking performance. Always check for any contamination in the system and replace the fluid if necessary.
simply pour the fluid down th dipstick hole........
the rubber brake line maybe collasped this can happend and not let fluid pass
only buy on jaguar deales because is special mineral oil.
153624
Dexron 3 transmission fluid is recommended by jaguar
dextron
dexron 3
Check the brake light switch adjustment.
Typically a 3.6L Inline 6
atf dextron 3
1988 Jaguar XJ6 stats Front Speakers: 3-1/2" Rear Speakers -Rear Door: 4" -Rear Deck: 4"
before you do anything, check you hydraulic mineral oil. its the #1 problem on these vehicles, Fill it up if empty and go from there.