Antifreeze

[Turbo_ZA]

I have been using Castrol Antifreeze SF in my turbo with distilled water.
This product is Nitrite, Ammite, Phosphate, Silicate free and is also non-toxic and bio-degradeable. It was difficult to locate here, but worth the hasle. It is also aluminium friendly. It would seem to be about the best solution around.
Below is the sales blurb

CASTROL ANTIFREEZE SF
DESCRIPTION:
Castrol Antifreeze SF mixed with the appropriate amount of water is used as a heat transferring liquid in
combustion engines. The heat of the internal combustion is transferred to the radiator where the mixture is cooled
by means of airflow. Castrol Antifreeze SF provides maintenance free freezing and corrosion protection throughout
the life of the engine or vehicle. Using silicate free aliphatic acid technology, Castrol Antifreeze SF provides long life
corrosion protection for aluminium and ferrous alloys. The synergistic combination of mono- and di-carboxylic acids
has been proven to provide superior protection for up to 700 000km on-road or as long as 8 000 hours off-road.
APPLICATION:
• Castrol Antifreeze SF provides long-life frost and corrosion protection. To ensure good corrosion protection it is
recommended to use at lease 33 % vol. of Castrol Antifreeze SF in the coolant solution. This provides frost
protection to -20°C. Concentrations higher than 70 vol. % are not recommended, maximum frost protection
(about -69°C) is obtained at 68 vol. %.
• Castrol Antifreeze SF may be used with confidence in engines manufactured from cast iron, aluminium or
combinations of the two metals, and in cooling systems made of aluminium or copper alloys.
• Castrol Antifreeze SF is particularly recommended for advanced engines, where high temperature aluminium
protection is important.
BENEFITS:
• Castrol Antifreeze SF provides long life corrosion protection through the use of optimized organic corrosion
inhibitors against all forms of corrosion. Excellent and lasting high temperature corrosion protection is provided
for the aluminium heat transfer surfaces found in modern engines. Castrol Antifreeze SF offers excellent
cavitation protection without nitrite.
• The carboxylic acids found in Castrol Antifreeze SF form a single layer of protective molecules and compared
with the traditional silicate layers this provides a much more efficient heat transfer.
• The inhibitors contained in Castrol Antifreeze SF have very low depletion rates unlike the traditional nitrite and
silicate technologies. Castrol Antifreeze SF provides protection against localised corrosion and cylinder liner
cavitation without the use of supplement coolant additives. Extended coolant life, often for the life of the engine
or vehicle is obtained through the use of virtually non-depleting corrosion inhibitor.
• The outstanding corrosion protection and the low depletion of the inhibitors result in less refilling and lower
maintenance costs. Fleet tests have demonstrated that the average pump life increased by 50%.
• Traditionally, coolant formulations have included silicates for high temperature corrosion protection of
aluminium heat transfer surfaces. However, silicates can cause stability problems and are subject to rapid
depletion in service and are therefore not readily acceptable for inclusion in fill-for-life cooling systems.
Because of the nature of the inhibitors, Castrol Antifreeze SF demonstrates outstanding stability, even in the
most demanding circumstances.
• Castrol Antifreeze SF is a modern engine coolant concentrate based on ethylene glycol. A 50% solution of
Castrol Antifreeze SF will give frost protection to -40°C.
Page 2 of Data sheet
• Castrol Antifreeze SF minimises coolant boiling by increasing the boiling point and providing extra protection
during hot summer periods or during severe vehicle operation, such as mountain driving or caravan towing.
• Castrol Antifreeze SF is compatible with other coolants based on ethylene glycol. Exclusive use of the product
is recommended for optimum corrosion protection and sludge control.
• Castrol Antifreeze SF provides excellent seal compatibility. The coolant has no adverse effects on rubber hoses
and gasket materials.
• Free of silicates, Castrol Antifreeze SF satisfies all major standards and requirements of the major European
car and truck manufacturers.
Castrol Antifreeze SF is based on non-toxic inhibitors and is fully biodegradable. The extended life of the product
contributes to the protection of the environment.
STANDARDS AND APPROVALS:
Castrol Antifreeze SF satisfies or exceeds all major standards. Approvals of the major European car and truck
manufacturers are available or pending.
Approvals include: ASTM D3306, D4656 and D 4985, Jaso M325 (Japan) LLC*, SAE J1034*, Isuzu Longlife Spec,
Mack, British Leyland LTS 22 AF 10, MTU (under evaluation), Ford ESE-M978B4H-A/WSS-M97B44-C,
General Motors GM 1825M*, GM1899M*, International Harvester*, MAN 324, Mercedes Benz DBL 7700*, Opel-GM
QL 130100*, Volvo (Reg No 260), VW TL 774B* & TL 774D, Cummings 85T8-2*, CatEC-1.
* except for Reserve Alkalinity
PACKAGING:
Castrol Antifreeze SF is available in 12x1lt bottles, 210lt drum and bulk.
TYPICAL CHARACTERISTICS:
TECHNICAL
CHARACTERISTICS
Castrol Antifreeze SF ASTM D 3306
REQUIREMENTS
METHOD
Ethylene glycol 93.0 % w/w glycol base
Other glycols 0.5 % max 5% w/w max
Inhibitor content 5% w/w
Water content 4% w/w max 5% w/w max ASTM D1123
Ash content 1.1% w/w typ 5% w/w max ASTM D1119
Nitrite, amine,
phosphate, borate,
silicate
nil
Colour strawberry red
Specific gravity, 15°C 1.116 typ 1.110 to 1.145 ASTM D1122
Specific gravity, 20°C 1.113 typ ASTM D1122
Equilibrium boiling
point
172°C typ > 163°C ASTM D 1120
Reserve alkalinity
(pH 5.5)
5 typ report ASTM D1121
Reserve alkalinity
(pH 5.0)
12.0 typ ASTM D1121
Reserve alkalinity
(pH 4.5)
20.4 typ ASTM D1121
Storage stability >2 years one year