I was just thinking if you had not owned the car since it was new it is possible that the previous owner lost the dipstick and replaced it with on e that is the incrrect length.
I am not really sure what to tell you as I don, t have engine code information and overfilling the crankcase is not a good thing. However there are usually letters to designate different engines such as, "K" type and there was only the 4.2L listed.
I would go to a Jaguar dealership and have them make sure what the capacity is, unless you have your owner's manual which should have it under, "capacities".
In the mean time keep the RPMs low as it won't need the extra quarts until you rev it high. However 3 some odd quarts is very low so if you can go to a dealership in another car that would bebest or give them a call. I am sorry you have so much conflicting information about the oil capacity and that I could not clear it up for you. I can tell you though that it probably takes more than the 5 and 1/4 Qts to filll it as it is a lrage V and 8.7 quarts sounds more like it.
Let me know what you find out.
Monday, December 31st, 2012 AT 4:24 PM