[FPV70]

I do have a Turbo Diesel Patrol and yeah, it's slow.
My TD Patrol is the RD28T 2.8 Turbo in the GQ Patrol and while I have towed 2.5t on a few occations, it's certainly not fast in any way, shape or form.
One thing I can say about it though is, when off road climbing hills or going through water, nothing will stop it.
It only has 83hp at the rear wheels but has 550lb of turque and when that gets put into low range, you can multiply those figures by 2.
So needing BHP in low range is not the needed item, but the torque is what really counts.
As for a 4.2 TD Patrol beating a TT with a ton of sand up a hill, I doubt it. The TT would smash the Patrol but I wouldn't want to be doing it all the time in the Terri.
Longevity, the 4.2 would be the better bet for towing but if you need to make haste, the TT will get it there quicker.
What people also need to remember is that the Diesel motor was meant for tractors when it was made and with a compresion ratio of anywhere between 18:1 and 23:1 compaired to a petrol motor's 9:1, the torque of the Diesel is huge.
I will still keep my TD Patrol because it keeps me honest and I can take the family anywhere.