Hi Zoomvet
what oil leaks do you have on your car? I was recently doing the thankless job of chasing oil leaks on mine. I did a rather nice job (i must say!) on my turbo oil lines - made gaskets myself, bought new bolts & oil pipes and it's dry down there now.
Think I have a leak from somewhere else like valve cover gaskets but I'll be looking at them this weekend when I replace my intake gaskets. Always seems oily round the oil filter too, may be the adapter Callaway use?
Apparently the old L98 is a bit of a leaker - bit more possibility on our cars that have extra oil p[ipes all over the place.
Mine only left a couple of drops of oil on the garage floor at the worst of times though so I haven't been all that worried. After all I've owned jags before and they leak from new!!!