thats a good question 4J. the 4 volts has lesser response actualy.

and thats good idea, thanks for the tip, I will try to exchange the box...

underfueled diesel is not as bad as underfueled gasoline, I hear that there's no such thing as lean- diesels are always "lean-burn", and running rich/ overfueled increases power and temperatures.

however, the engine could be much more hotter if the fuel is very low, forcing you higher revs because of low power than before. and lesser power means longer upshift points...