Seadoo coolant
 

I have a 2018 GTI. I never paid attn to the coolant reservoir before but noticed there was barely anything in the tank ( engine was cold at the time, hadn’t used for a couple of days). Bought a quart of coolant and that brought it to the MIN line in the tank. Went out for an hour ride and checked it when I got back and it had gone down which I’m guessing is normal. Checked it again today and the reservoir is practically empty again. Normal? Nothing leaking inside the machine.

Not normal!! Better get that looked at right away! My good friends just blew the motor in their GTX a couple weeks ago because of the exact same issue!...and contrary to popular belief the motor does not go into limp mode or shutdown with the high temp readings which I find rather unbelievable!

I don't remember the exact cause of the coolant leak but it only took 12 minutes at idle speed to completely fry the motor!

Sorry I can't be of more help but Good luck!

Dan

Not Normal, I had a GTI (2009).... Never saw the reservoir empty.... I would start looking for the obvious...... but it could also be the not so obvious. As I recall, the "radiator" was the ride plate......which means there are likely fittings and seals that could be slowly leaking... gravity slowly takes over..... and those tanks don't hold much.....