So I’ve been in the process of getting an old Batavus VA running again, replaced a few parts and had it good enough to run with except the fuel tank which is currently nice and rusty. Ended up making an improvised gas tank out of an old isopropyl alcohol bottle, had it running perfectly the other day but hooked it up today and noticed after an hour of tinkering the gas wasn’t liking the bottle cap and started dissolving it into an odd dust. Just curious if this could damage the engine or anything, any tips and information helps!