I decide to buy a Jag XJ8 VandenPlus, and I do not know the difference between XJ8 and XJ8L May you help and explain please ? Or maybe should I buy XJ6?

SOURCE: OIL ISSUE

I have a 1990 and 1992 XJ6. When I used 10W30 I found the oil pressure guage registered very low pressure especially at high air temperatures. As far as I know the same 4.0L engine requires 20W 50 engine oil and not synthetics.
Since using that weight, and that engine needs 8 quarts......, pressure guages read perfectly.

SOURCE: IDLE SPEED CONTROL VALVE IN JAG XJ6

Hi the idler valve has a set up with jag equpment but there is a way round this,ifyou have had  O2 sensors changed, is the idler working what are the revs when hot. 650 is to low  850 is ok with a hot engine Mike do you know where the idle valve is and the allen key manual adjustment try a quarter turn but mark it so you can turn it back if need be. let me know how it goes   D    

SOURCE: stater for a jaguar xj8l 1998

starters is mounted on the bottom of engine. its a little long electric motor with a little drive gear that mesh to flywheel to turn engine over to crank.

SOURCE: 87 jag xj6. Brake pedal spongy goes all the way

If the brake lines and fluid is clear then you may have to look at the brake booster found at the other end of the brake pedal under the hood...

SOURCE: what does fault code P0001 mean 95 xj6 jag

What does the code Pro 1 mean on a 1995 jaguar XJ6