Ik hoop maar heel weinig. Auto antivries is zeer schadelijk voor het milieu. Je blaast na de winter al die rommel de haven in.
Ik gebruik (niet giftige) Star Brite antivries.
www.georgekniest.nl/catalogus/...rinkwater-antivries/
Bij toiletten is het beter om de boel af te tappen. Antivries kan ook de rubbers aantasten.
Zie bijvoorbeeld de winterisation voorschriften van Jabsco:
3. Servicing - Winterisation
Drain the complete system, both as protection against frost damage and to discourage the growth in the pipework of anaerobic bacteria that cause unpleasant smells.
Open any secondary valves.
Remove the base drain plug (key 8).
Disconnect the discharge flange (key 32) from the pump (avoiding the need to remove the hose from the discharge elbow (key 34).
Loosen hose clips and disconnect the hose ends from both seacock hose tails. Pump the handle (key 17) to drain the toilet pump and ensure that all water is drained from the toilet system.
CAUTION: The use of anti-freeze is NOT RECOMMENDED, as it is impossible to ensure that it penetrates the complete toilet system. If, for any reason, anti-freeze is used it MUST be glycol based. If you plan to overhaul the toilet in the spring, this is a good time to disassemble it and take the components ashore to make the overhaul easier.
HAZARD RISK - Seacocks opened by mistake
If you leave the toilet disassembled and, if the seacocks are opened when the craft is afloat, water will flood in and may cause the craft to sink, which may result in loss of life. Therefore, you MUST attach a warning notice to the seacocks and, if possible, wire the seacocks shut.
ATTACH WARNING NOTICE! If you are not disassembling the toilet:
Reconnect all hose ends and secure them with their hose clips. Replace the base drain plug securely.
Replace the joker valve in the discharge elbow.
Reconnect the discharge elbow and hose to the cylinder using the discharge flange, whilst relieving any leverage from the discharge hose. If you do not, the joint may not seal.
Fasten down the seat, lid and pump handle to prevent use and attach a warning notice.