Don't know if you had an additive in the bottle- but after 4 or 5 bottles- I start to get a taint in the mouth that makes me not want to drink again. So I carry something with a strong taste to take the taint away on the long rides. For me that is a "Marmite" sandwich and it does two jobs. First it takes all taste away (I hate the stuff) but it also gives me an overdose of essential salts.
Seems to work for me- but The ozzie's have a very good substitute in Vegemite. Don't know if you have it over there but it does work.
But I would put it down to the bike.You probably enjoyed the ride so much you were a bit distracted on the refuelling stakes.
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How long was I in the army? Five foot seven.
Spike Milligan