I decided to take your advice and collected a baseball bat to mug my younger self for time machine fuel. Right before I could “transition,” another time machine landed next to mine. My older self emerged with a decked-out assault rifle and told me to hand over my fuel. I did, and he left. Am I in danger of destroying the space/time continuum?
Maybe a Menace in WV
I think given the circumstances you have outlined, we can be safe in assuming that the space/time continuum is going to be jarred at the very least. We can hope that your future self is as aware of such considerations as you seem to be. If he is, presumably he is presently (or futuristically, or historically) working at maintaining the integrity of the current timeline. However, now that your personal timeline is one where you have no more fuel, I recommend you take up a different hobby altogether.