coolant

[larson]

well its that time of year agian when the temprature begins to drop. having only owning my bus 4 months or so i have to asume the coolants no good. what i need to know is..is there a drain plug? and were would it be?

thanks in advance larson

 

[zippy656]

http://www.nissan4x4ownersclub.com/forum/showthread.php?t=3342
youll find the manuals here mate

 

[patbhoy]

Drain is at the bottom of the radiator, see figures 7 and 8

 

[rustic]

What is the best coolant to put in? and best price ?

Every year I take out a sample from the rad and place it in the freezer (-25/-30C if it stands this without freezing, I leave it.

How often should it be changed then?

Regards,
Rustic

 

[patbhoy]

What is the best coolant to put in? and best price ?

Every year I take out a sample from the rad and place it in the freezer (-25/-30C if it stands this without freezing, I leave it.

How often should it be changed then?

Regards,
Rustic

I'm with you on this one, test it and if it dont freeze then you know its doing its job:thumb2

 

[(RIP) PLANK]

doesn't coolant get acidic when it has been in too many years and start being corosive?

 

[lacroupade]

doesn't coolant get acidic when it has been in too many years and start being corosive?

No Plank, thats old men you're thinking off :lol:lol:lol:lol

 

[clivvy]

for the sake of cost and time, id do it. if your only draining the rad, you cant go far wrong. drain plus at the bottom or undo hose.

 

[Thomas-the-Terrano2]

good one never thought of testing in deep freeze,

tend to run as near 100% coolant year round, ok
pricey but dont dilute oil, and pure coolant runs
warmer and obviously colder too.

 

[Adz]

good one never thought of testing in deep freeze,

tend to run as near 100% coolant year round, ok
pricey but dont dilute oil, and pure coolant runs
warmer and obviously colder too.

With you there :thumbs
Ran all my motors to date on 100% anti freeze & also it will find any small points to leak from :thumbs

 

[geoffdown]

With you there :thumbs
Ran all my motors to date on 100% anti freeze & also it will find any small points to leak from :thumbs

might be wrong but 100% anti freeze will freeze at higher temp i.e not very cold might be wrong.:nenau

 

[Adz]

might be wrong but 100% anti freeze will freeze at higher temp i.e not very cold might be wrong.:nenau

Pass on that Had no problems that i've noticed so far :nenau

Will put some in the freezer from room temp & some boiled (don't tell er in doors :augie)

 

[Toolbox]

As far as im aware anything over 50% (50%water 50% antifreeze) starts to go the other way 100% will freeze at arond -12degC.

Thats unless you are using pre-mixed stuff.

 

[larson]

As far as im aware anything over 50% (50%water 50% antifreeze) starts to go the other way 100% will freeze at arond -12degC.

Thats unless you are using pre-mixed stuff.

thats a worry

 

[Thomas-the-Terrano2]

didnt know that, seems obvious progression that adding anti freeze err aids water not
freezing, the higher the ratio ( of a/f ) the lower the freezing point and then onto 100%
being max lowest, hmmmm back to drawing board then.

 

[solarman216]

Glycol

Yes this is one of those odd things, 100% glycol will freeze at only a little below zero C, and 30% is more than enough for our climate, but you must use the inhibited versions if ali parts are involved, re draining if you only drain the rad you are only draining third to half the coolant but to drain the block on a 2.7 is very hard, the plug is behind the exhaust under the turbo just about get to it but no room for leverage and they are tight the last engine we had here on the bench I could not remove it for fear of shearing it off, and could not afford to do that, Rick

 

[Adz]

As far as im aware anything over 50% (50%water 50% antifreeze) starts to go the other way 100% will freeze at arond -12degC.

Thats unless you are using pre-mixed stuff.

Bloody hell, guess i've been lucky

Add some water i think this weekend before the proper cold weather starts :thumbs

 

[rustic]

Found this on Castrol USA site:

Many engine failures are the result of improper antifreeze usage. To protect equipment from coolant–related damage, it is critical to know the different antifreeze types, required mix ratios and problems that could result from improper use. A 100 percent antifreeze solution will turn to a solid at 9°F (–13°C). For best all–around protection, use a 50:50 mixture of antifreeze and water. Concentrated antifreeze needs water for chemical balance and optimum performance.

Antifreeze to Water Mix
Coolant should not be mixed with hard tap water. Hard tap water has excessive calcium and magnesium deposits that can cause scaling, which will result in inadequate heat transfer. To avoid scaling, use only soft or de–ionized water that is not treated with salts or chlorides, when mixing water and antifreeze. (OEMs publish limits in parts per million (ppm) for hardness, chlorides, sulfates and total dissolved solids for the water used to dilute antifreeze.)

 

[solarman216]

Bloody hell, guess i've been lucky

Add some water i think this weekend before the proper cold weather starts :thumbs

This only applies to E Glycol, not Methanol versions, although I am not sure Methanol is used much today, I have not seen it for a while, but??? Rick

 

[lacroupade]

might be wrong but 100% anti freeze will freeze at higher temp i.e not very cold might be wrong.:nenau

it also lowers the boiling point interestingly......