Longer answer: Both are good. It depends what your preferences are when looking to buy a car when deciding between the I6 and the V8. As for oil leaks, ANY motor will leak oil if it's been thrashed its entire life or had an accident & wasn't repaired properly, etc. As for your average Ford I6/V8 out of an AU, you shouldn't expect any leaks.
I have an EB Fairmont Ghia. My motor is the same as yours except you've got a different (read: better) ignition system, and ALL the AU 5.0s came out with good heads (GT40Ps) and intake manifolds (Explorers).
The AU 5.0 is a big improvement over the E-Series 5.0. Check out www.aufalcon.com (I think this is the site, might have .au on the end of it) for more opinions regarding the XR8 for fuel consumption, build quality, performance, mods, etc.
I reckon you're on a winner though, the manual AU XR8s are certainly pick of the breed!
as far as oil goes i had an EA with about 220 000 kms on it and it leaked oil and dropped shit all over the drive way. I now have a ED farimont ghia with 170 000 km on it and thier are no oil leaks or drops coming out. I think it just depends on if its a EA and the engines history.
The AutoGuide.com network consists of the largest network of enthusiast-owned enthusiast-operated automotive communities.
AutoGuide.com provides the latest car reviews, auto show coverage, new car prices, and automotive news. The AutoGuide network operates more than 100 automotive forums where our users consult peers for shopping information and advice, and share opinions as a community.