Join Date: Sep 2005
Location: English Midlands
Re: Is it bad not to use my GT that much.
Going back to the original question.......
Answer:- For a diesel, no!
1) Low mileage is king when it comes to resale value
2) Time is irrelevant to diesel engines.
Explanations of (2):-
a) If you're driving a petrol engine, then it's a good idea to change the oil every 6 months or less due to nasty chemical (acid) build-up, regardless of mileage, and not let it stand around too much and let the nasties attack it. It is also not very good for short journeys compared to a diesel due to greater amounts of corrosive substances in the combustion process whilst it is warming up.
b) If you drive a diesel, however, then time and activity doesn't matter as the chemical mix and build-up is more benign, provided the oil and fuel is of a high enough quality. This is so whether it is a GT, Ford van, railway locomotive or whatever.
Out of those available, you've picked the right engine for its duty.
If the car consisted only of its diesel engine and a rudimantary frame to hold it then you could change the oil on a mileage basis and do no other maintenance apart from change the coolant every 2 years. However, there are other bits in the car that require attention a bit more often (brakes etc.), hence the need for (say) yearly servicing regardless of mileage. You could try and get you friendly Alfa dealer to only change the oil on a mileage basis (12000 miles in the GT's case) and your engine would be perfectly safe, but this would break the laid-down oil-replacement intervals written with a petrol-engine mindset -- not worth the aggro. It would reduce pollution, though.
So, a diesel GT is a good investment if you do a low mileage, and no comparable harm will come to it by treating it in this way. Which rather turns the argument about diesels being good for high mileages on its head. In fact, these engines are ideal for both high and low mileages. It's just how things are.