I just bought a 1998 XJ8 with about 70K miles on it. It is just a
beautiful car, actually my dream car, and the mechanic during
pre-purchase inspection said it had been excellently maintained. But
lately, as the season has changed and it has become colder- the engine
takes some time to turn over. I have heard this is a common problem
with Jaguars? Is that correct? And what is the reason for that? What
should I do? I changed the battery and am assuming a tune up would
help?  Lastly, is there a website available that identifies these types
of common problems with this model? Thanks.