antifreeze

[farquart]

This may seem like a silly question but this is our first winter as boat owners and we are about to winterize our Yanmar 3GM. Is there a specific antifreeze we should be using or can we use the same stuff you put in the car?.

<hr width=100% size=1>

 

[Fill]

We asked a Yanmar dealer last year and they recommended Texaco Havoline anti-freeze. No idea why, seems much the same as the others, but it was standard car anti-freeze. Seems to have worked fine.

Hope this helps.

<hr width=100% size=1>Fill

 

[JOHNOO]

Check out this web site.

http://www.yanmarhelp.com/i_coolant.htm

<hr width=100% size=1>

 

[dickh]

Yes, use the same car antifreeze - at 50% strength - I've changed the AF mixture in the freshwater cooled side this year as well - the first time in 5 years - it certainly needed it, it was a brown sludge. And going to do the the seawater side this weekend, also with 50% mix.

<hr width=100% size=1>dickh
I'd rather be sailing... /forums/images/icons/smile.gif

 

[MainlySteam]

Can't be a silly question because I asked a similar one regarding whether there was any difference between the expensive ones and the cheap ones (factor of 2 or 3x price in some cases) as they almost all seem to list the same ingredients and concentrations of those on the label. No one produced a definitive answer.

So what I did, I just chose the cheapest on the shelf that claimed the same ingredients as the expensive ones and used that. Can't remember but it was alot cheaper and I am sure it will be fine.

Freezing is not a problem at all here but needed for anti corrosion of course.

John

<hr width=100% size=1>

 

[tr7v8]

Best description of anti-freeze types I've ever seen is here:-
<A target="_blank" HREF=http://www.honestjohn.co.uk/faq/faq.htm?id=41>http://www.honestjohn.co.uk/faq/faq.htm?id=41</A>
The other thing I've started doing with all my enigines is not using tap water, I now use the filter jug and filter all water. I am convinced the gunk in modern tap water causes harm to water pump bearings as well as the minerals causing problems with alloys.



<hr width=100% size=1>Jim

Draco 2500

 

[Burnham_Bob]

I went to the local car shop and bought the cheapest they had and last year my 1GM 10 survived okay. All of them seem to have corrosion inhibitor as standard. Mix it 50/50. I let my engine warm right up and ran a lot of fresh water through anyway to get rid of any crap. Then I just ran antifreeze mix through. In case its any help, the way I do it is with a hose with an on/off squeeze handle for the water. Top off the Vetus water strainer and just keep letting in water as the lvel falls. Wait until the rubber hose to the exhaust gets hot showing the thermostat is open and then pour in the antifreeze mix. I have a couple of coke bottles full and waiting to just tip in. Maybe its overkill but i ran about five litres of the anti freeze mix through so that the water trap and exhaust up to the goose neck got filled up rather than drain them. Seems to work fine!

<hr width=100% size=1>