Hi all. Been about 150k km since the last engine rebuild, the old girl is running a little weird again, hoping someone can shed some light. 12HT engine, the last month or so it has been progressively sounding noisier and running rougher, but at the same time getting better fuel economy (3 weeks ago at 12L/100km now at 10L in the same conditions)!? Not something most people complain about but it's making me wonder what the cause is. It's developed a bit of a lumpy feel too, sort of like a faint miss, possibly new injectors needed. Also seemed to have stopped using oil as much as it used to. Definite power loss though, running at 10psi but feels like 2. Hopefully someone might have some clues.