โSep-05-2018 04:21 PM
โSep-06-2018 01:02 PM
SidecarFlip wrote:MDKMDK wrote:SidecarFlip wrote:
Pretty complex stuff here, all for a 6 buck part that is really a consumable though most people don't realize that.
Like oil pan plugs.
Kind of. With oil pan plugs you can have a plug or a Fumoto valve. I prefer the plug. Radiator (expansion tank) cap is just that.
You do have to wonder how many people out there have failing caps and basically non pressurized coolant systems. I bet a bunch.
I got wise on pressure caps from the Powerstroke Forum. Lots of coolant and liner related issues happen from a 6 buck part failure.
โSep-06-2018 12:44 PM
MEXICOWANDERER wrote:
Nalcool 2000 prevents high percentage ethylene glycol from getting gummy. The oversize radiator is shiny brass inside. One treatment, 1998 and the coolant will last damned near forever. I did a boil test on the thermostat and the engine iron looked like brand new (2016).
I remember one of the last things I did when packing the containers was to fill carboys with 48 cent per gallon Wal-Mart distilled water. SanMar could care less what the 35' containers weighed. Every car trip means ten gallons of distilled water. Mexican Customs opened one gallon and poured some into a palm and smelled it. I told them it was for my BiPAP machine. They abandoned curiosity in under 3 seconds.
Distilled water costs like sin down here. They call it liquido Para Baterias. Often costs a dollar and a half per pint.
I found the old DOW blue antifreeze the least offensive as far as garbage additives. With Nalcool 2000 it is quite a coolant.
โSep-06-2018 12:13 PM
MDKMDK wrote:SidecarFlip wrote:
Pretty complex stuff here, all for a 6 buck part that is really a consumable though most people don't realize that.
Like oil pan plugs.
โSep-06-2018 11:07 AM
SidecarFlip wrote:
Pretty complex stuff here, all for a 6 buck part that is really a consumable though most people don't realize that.
โSep-06-2018 10:05 AM
โSep-06-2018 09:24 AM
โSep-06-2018 09:22 AM
MEXICOWANDERER wrote:
And there is nothing better than an original equipment brand radiator cap (and thermostat). My Kubota has 80% DOW anti-freeze plus Nalco cooling system treatment. The remaining 20% is distilled water hauled down from the states.
โSep-06-2018 08:13 AM
marcsbigfoot20b27 wrote:Nope. It's 15 psi above atmospheric pressure. The cap regulates relative pressure, not absolute pressure. As atmospheric pressure goes down, so too does the pressure inside the radiator.
Cooling system is a closed system under pressure....lets use your 15 psi.
At sea level or 8000 ft it is still 15 psi in the cooling system. Should be the same boiling point high or low altitude.
โSep-06-2018 08:03 AM
joshuajim wrote:marcsbigfoot20b27 wrote:
Cooling system is a closed system under pressure....lets use your 15 psi.
At sea level or 8000 ft it is still 15 psi in the cooling system. Should be the same boiling point high or low altitude.
Not quite. The cap raises the pressure above ambient sea level air pressure (14.7 psi). At 8000 MSL the ambient pressure is about 4# lower than sea level.
Thatโs why water boils at 198 degrees at 8000 msl.
โSep-06-2018 07:55 AM
marcsbigfoot20b27 wrote:
Cooling system is a closed system under pressure....lets use your 15 psi.
At sea level or 8000 ft it is still 15 psi in the cooling system. Should be the same boiling point high or low altitude.
โSep-06-2018 07:35 AM
โSep-06-2018 06:44 AM
joshuajim wrote:That's why it's called "antifreeze," and not "antiboil."
In reality 50/50 antifreeze only raises the boiling point by 8 degrees.
marcsbigfoot20b27 wrote:Higher altitude, lower pressure, lower boiling point. The cap adds 15 psi to the ambient pressure.RCMAN46 wrote:
At 10,000 feet that temperature drops to about 237 degrees f.
Do tell????
rhagfo wrote:"Better," how? If the engine will sit in arctic temperatures, sure, you get more freeze protection. But ethylene glycol has less than 60% of the specific heat capacity of water, so the more you use the less efficient the cooling system becomes. 50/50 is the accepted compromise between cooling efficiency, freeze protection, and corrosion protection for most climates.
Better than 50/50 is 60/40 antifreeze/H2O, higher boiling point and lower freezing point.
โSep-06-2018 06:30 AM
โSep-06-2018 05:59 AM