As with my personal driving of the the Ls400 for 20 plus years, I've been reading now about the 430 V8 engine for many many years and longevity and durability of the whole drivetrain is impeccable
Normal servicing and maintenance of course, as with any car results in complete peace of mind and less strain on the pocket too
cambelt, pulleys and waterpump every 100k miles .. avoiding air suspension too .......... and you have a classic in the making, if not already
fuel and insurance costs, well, it's a superb V8 with all the comfort and security of driving that one could ever wish .... you don't buy a V8 and expect to worry about mpg ........ ever
Malc