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So I bought a 1990 Ski Nautique this summer. It has about 8 drain tubes in various places on the motor and manifolds. I have a fitting to run a garden hose in for dry land running. I was thinking of running a few gallons of RV anti-freeze into that port until it's coming out of the exhaust pink. Then opening all of the drain pet-cocks and maybe blow some air into the garden hose port to get as much of the fluid out as possible. Is that the right way to go, or should I drain any water out of the drain tubes FIRST, then run anti-freeze through and leave it in the motor/manifolds without draining?
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So I bought a 1990 Ski Nautique this summer. It has about 8 drain tubes in various places on the motor and manifolds. I have a fitting to run a garden hose in for dry land running. I was thinking of running a few gallons of RV anti-freeze into that port until it's coming out of the exhaust pink. Then opening all of the drain pet-cocks and maybe blow some air into the garden hose port to get as much of the fluid out as possible. Is that the right way to go, or should I drain any water out of the drain tubes FIRST, then run anti-freeze through and leave it in the motor/manifolds without draining?Last edited by Lucenut; 10-02-2020, 10:37 AM. -
Correct Craft manuals state to drain the engine at the drain points and then pour antifreeze in through the hose going to the thermostat. That’s what I recommend and what I do. There are other techniques that work well for people. I just don’t have experience with them. The most important thing is getting water out. The next most important thing is preventing corrosion by getting a non-freezing liquid in. -
Sorry to be dense, but there are 4 hoses from the thermostat housing. The 2 top hoses go to the manifolds. Not sure what the other 2 go to. Which one do you pour the anti-freeze into?Comment
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Pull the hose from the water pump to the thermostat.Comment
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