yanmar 1500 getting hot

kenmac · Jun 3, 2005

yea, but you also don't won't it to run hot either. thats why you have to run correct mix.(NO WATER PUMP )

mark777 · Jun 3, 2005

Well it's about common sence and demographics, correct? If your snow blowing in winter or brush hogging in summer the ratio is 30/70.

If your at risk for freezing (storing tractor in un- heated garage) then draining the cooling system or using block and radiator heaters is recommended. I'm sure that more anti-freeze for long periods of storage would be just fine, but for operating the tractor, with either convection or pumped circulation (thermo-siphon or water pump circulation) the above ratio is recommended.

Ultimately it's the owner-operators call.

Soundguy · Jun 4, 2005

( thats the main reason for using anti freeze,,,is to anti freeze protect it,,,right? thingy )

Antifreeze / anti boil....

For the most part.. 70/30 works.. some have to adjust that slightly to account for colder temps.. in general.. 50/50 is too much though..

Soundguy

thingy · Jun 4, 2005

Well,,maybe in fl.,,but in w.va.,,it gets cold enough to freeze about there,[where ever there is],,,but,,if a 50/50 mix overheats those yanmores,,I wouldn't use it,,would just drain out a little in fall and bring it up to a 50/50 mix untill spring,[unless it would even over heat in winter?],,than I guess in half the country,,you would have to park it,,,,don't hurt my jinma none,I got about a 60 -40 mix in it,,,with the 60% being anti freeze,,ain't over heated yet this year,[or last],, the thing

Soundguy · Jun 5, 2005

Thingy.. your chineese jinma has a water circulation pump... Our grey market yanmars are mostly thermosyphon..( no water pump ) that is they rely upon heating of the water to make it's own circulating current in the cooling system.. same as old JD units, and some old Allis chalmers units. In those systems, if the heat density of the water is way off.. you don't get adequate circulation.

Larger grey market units.. like the 2000, etc.. have a pump.. 1700 can be retrofit with a 2000 pump.. etc.

Soundguy

thingy · Jun 5, 2005

I didn't know some didn't have water pumps,,,makes sense,,thicker is harder to circulate,,I guess??,,,well,,I think about a 50 - 50 mix,,is probably good down to about 30 below o,,,,so reckon a 30 - 70 mix should be maybe 10 - 15 degress,,above 0,,it does get colder than that here,,not to often but it does,,think we had several nights about 5 degrees or so last winter,,and I remember it below 0 here in w.va. not to many winters back,,one time I was in upstate n.y. in the winter,,and it was 30 below 0,,daylight one morning...thats all I'm saying,,is in a lot of the country,,a 30 - 70 mix,,might not be good enough,,,,course,,it probably wouldn't freeze solid enough to crack anything or push a freeze plug out,,???,,it would be something I would consider if buying one,,,now that I know though,,,thingy

sirgknight · Jun 5, 2005

i think a distilled water solution works best compared to tap water if no water pump exists.

bruce1966us · Jun 5, 2005

30/70 is good to 5 below zero. i use it in everything here in TN.

Soundguy · Jun 6, 2005

( makes sense,,thicker is harder to circulate,,I guess??,,, )

It's not a thicker issue.. but more how water current flow happens when water is heated. That's the whole principal of thermosyphon. If you change the heat transfer property of water too much.. it doesn't t-syphon well.

Soundguy

thingy · Jun 6, 2005

5 below,,still wouldn't feel safe with that mixture here,,,,it has gotten colder than that in w.va.,,and not to long ago,,so that means it will again,,,,,,although,,its a rare kinda thing,,,but when it is,,,its not that rare I reckon,,,,thingy