After filling up - make sure you move the "petcock thingy" from reserve back to primary
Once you run out of gas on reserver - that's it
Garage shops can be helpful once you remind them they must have a gerry can of gas for their lawn mower
Gas from above shops is expensive though - 4$/litre or a Toonie for 500 ml (a Toonie is a Canadian coin)
1 litre synthetic oil containers make a good transport container for 500 ml of gas
The small amount of left over synthetic oil doesn't appear to have any adverse effects on a Savage
500 ml of gas is more than enough to get you down the street to the next gas station.