Quick question about antifreeze???

[savesday04]

I am getting ready to winterize my 99 speedster. I was wondering what kind of antifreeze to use. I have a gallon of rv/marine antifreeze but the bottle says its already diluted. Will this be ok to use since there will still be water in the engines or do i need to use regular automotive antifreeze that is 100%? I have read that alot of people use rv/marine antifreeze.

 

[seadoosnipe]

50/50 dilute?......

The manual says to use a 50/50 dilute of anti-freeze designed for aluminum engines.

This isn't the first time I've heard of the RV anti-freeze, but I haven't checked on it yet as to whether or not it's good for the aluminum engines.

My first thought is that, it's designed for the water pipes in and RV, so it's probably going to be good to use.:cheers:

 

[savesday04]

so adding antifreeze that is already diluted is ok? I thought since there will still be water in the engine that we are supposed to add 100% antifreeze so that it will mix with the water in the engine and then be diluted. My manual says to add 40/60 with all the water removed.

"In cool regions (where freezing point temperature
may be encountered), cooling system must be
filled with water and antifreeze solution (40% water,
60% antifreeze)."
"NOTE: The engine will not have to run during this
operation but should have been ran before to exhaust
water from cooling system components."

 

[kustomkarl]

For 2 stroke engines it is better to add straight anti freeze to the engine as it will mix with any water than have it too diluted with a 50/50 mix. If you adding antifreeze to a inter cooling seadoo/ 4-tec than you need 50/ 50 mix and the antifreeze MUST be for aluminum engine use. Here is more information about anti freeze. Be sure to use anti freeze made for aluminum block engines. You need to follow the service manual method exactly. The service manual says to pinch hoses, and insert the fluid from the top water line. On some models you needed to pinch 4 hoses. What I did is buy vice-grips with smooth jaws ($5.00 usd each). Fill it with around 2 liters of antifreeze, un pinch one hose, put another 6 oz., wait, then remove the vice-grips. Almost all the fluid will then come out at the bottom. The idea is to mix the antifreeze with whatever water was in the cooling system, so it doesn't freeze.

A service manual is a must and will be cheaper than if you get the engines winterized, so it's a definite good investment. It has pictures and detailed instructions for just about everything you need. I don't want to say what hose to pinch because it's different for each model. I recommend you join as a “Premium Member” to get your service manual and if you still have questions you could get advice from the forum’s expert moderators.

Karl

 

[gerapau]

If you adding antifreeze to a inter cooling seadoo/ 4-tec than you need 50/ 50 mix and the antifreeze MUST be for aluminum engine use.

You sure Karl? My manual and shop manual both state that I should use undiluted antifreeze (100% concentration). It goes on to say that the premixed BRP antifreeze (50/50) is NOT suitable for doing this (winterizing). Maybe different years require different stuff but my 2008 4-tec definately requires 100% antifreeeze.

 

[savesday04]

so can i just use regular Prestone automotive antifreeze that is not diluted
also forgot to ask will one 6oz bottle of seadoo jet pump oil be enough to change the oil on both my jet pumps on my 99 speedster with the twin 787s?

 

[gerapau]

so can i just use regular Prestone automotive antifreeze that is not diluted
also forgot to ask will one 6oz bottle of seadoo jet pump oil be enough to change the oil on both my jet pumps on my 99 speedster with the twin 787s?

You can. Most, if not all, recent automotive antifreeze is safe for aluminum engines. That said, unless you plan on trying to recapture the antifreeze in the spring it really isn't very good for the environment. The first time you start it up in the spring you will be emptying that antifreeze onto the ground/into the lake and that can have bad side-effects. There are environmentally friendly alternatives if you check around (but they probably will cost more).

 

[savesday04]

maybe i'll try to find some environmentally safe antifreeze depending on the cost I might use that instead of regular automotive antifreeze. Thanks for the help.

 

[DCKD]

You sure Karl? My manual and shop manual both state that I should use undiluted antifreeze (100% concentration). It goes on to say that the premixed BRP antifreeze (50/50) is NOT suitable for doing this (winterizing). Maybe different years require different stuff but my 2008 4-tec definately requires 100% antifreeeze.

You are supposed to use undiluted anitfreeze in intercooled 4-tech. The idea is that the undiluted mixes with water that is already in the intercooler.

 

[gerapau]

You are supposed to use undiluted anitfreeze in intercooled 4-tech. The idea is that the undiluted mixes with water that is already in the intercooler.

Even for the non-intercooled 4-tec it is recommended (at least for the 2008 model it is) by Sea-Doo to protect the exhaust manifold with some undiluted antifreeze. The user manual tells you how to do this.

 

[kustomkarl]

You sure Karl? My manual and shop manual both state that I should use undiluted antifreeze (100% concentration). It goes on to say that the premixed BRP antifreeze (50/50) is NOT suitable for doing this (winterizing). Maybe different years require different stuff but my 2008 4-tec definately requires 100% antifreeeze.

The regular anti freeze mix of 50/ 50 ,is for everyday use of the inter cooler system. To winterize it you should use 100% antifreeze to winterize your seadoo, so it mixes with water and get diluted as it mixes.( as I said in my first post)

Karl

 

[seadoosnipe]

Open loop cooling.......

Yes, the open loop system uses 100% anti-freeze because when you put it in and then it drains, it's mixed with the water that's already inside, so it does break down to a 50/50 mix. But using a 50/50 mix to begin with, means you take a chance of not getting the coverage you need for the colder temps.....

You'll only see this procedure in the 4-TECs.........all two strokes say to dilute before adding.........:cheers:

 

[tresvatos1]

What would happen if I did this?

The easiest way is to get a 5 gallon pail. Fill it with the pink antifreeze.Now get a submersible pump and hook a hose to the pump and the other to your flush fitting or whatever.Start your engine and then pump the antifreeze thru the whole motor. No need to pinch off hoses and leave the antifreeze in there. As long as you get the water out and the antifreeze in nothing will freeze inside the engine. Just pinch off the same hose you do for flushing and you'll be ok.I've been doing this for years and never had a problem.

Would this work at all? It seems plausable