TR4 ignition points settings and maintenance mileage interval

[earckens]

Update from my Mallory 2-point settings adjustment. To recap: after 6 years I decided (3 months ago) to verify the points clearance and found them to be at 0.015".

I vaguely remember having them set at the time without thinking double or single points have different clearances.

This time I set clearance on both at 0.025".

We took the car for a long drive (270km) to the Gorges du Verdon (south-eastern France, where we have our secondary residence), and one thing that sprung to attention was the drop in fuel consumption.

Before it was like 15l/100km (15.5mpg) , now down to 12l/100km (19.6mpg).

This is with Weber 40 DCOE double carburettor and winding, hilly, roads travel.

Does it make sense that points clearance would have such an influence?