Originally Posted by
Hoges
Mick..have a good look art the engine for hints of coolant leaks. That's why it's good if you can take it on a long(er) drive and check to see whether the coolant level drops or not.
Listen for tappet noise. while the 4.6 is a fairly robust engine, they do seem to have a thing about rockers. I replaced mine at 130k. It was a long day's work (along with multiple coffees and beers!) but I took the time to check all sorts of things as well as get the injectors ultrasonically cleaned and checked. Dunno why they (rockers) go, they just do. I don't run it on synthetic oil ever! because it's too slippery and doesn't let the lifters and push trods rotate as they are supposed to (roller rockers...different story).
We seem to forget that if an engine has a life expectancy of say 200k between major overhauls based on stop/start driving, and we are buying one at say 170k, then it's life expectancy is 80% gone already...same with transmission.
Major stuff apart from the rockers has been the viscous couping unit in the t/f case. That also was a day's work. Next time I could prob. do it in 3 hrs...learning curve and all that.
Look for water leaks in the footwell and the spare tyre wheel well. Both can be fairly easily fixed (see these pages).
Don't fall into the trap of HD shocks..the standard Boges are far better with the air suspension. Air suspension sounds cumfy. It's not! It's a linear response and there's no way to get the magic carpet associated with the RR Classic which has, I suspect. loooong travel non-linear spring rates. Cooper (H/T) tyres don't help. They are hard and transmit even the slightest bump.
Frankly at the present time (mine has only 145k km in 13 yrs) I wouldnt try and pull 3t ... the torque band doesn't get going until you reach about 2500-2700 rpm ...which is above 100kmh in top gear.
All that said, it's great on a trip...last time i went to Sydney with 4 adults and luggage we averaged 85kmh for the whole trip down at around 12L/100km. got as low as 10.5-11 for some (freeway) parts...
Good luck
EDIT: The air suspension can be a PITA but it's worth it. Once you have it sorted...great