Orange
Streak refers to the color of a mineral in powder form.
the color of mercury is gray it has no color
His favorite color was red.
there is no name for the color, but there is the "streak" of a mineral, meaning the color of its streak.
Streak is the color of a crushed mineral's powder. The color of a mineral's powder may differ from the actual color of the mineral. This property can be useful for mineral identification.Almost every mineral has an inherent streak color, no matter what color the actual mineral is.
Yelowish
originially Dexcool which is orange color. if its been replaced with glycol, its green.
Coolant recommendations and cautions: The recommended mixture is 50/50 ethylene-glycol and low mineral content water. Never use pure antifreeze. Only Mopar Antifreeze Coolant, 5 Year/100,000 Mile Formula (glycol base coolant with corrosion inhibitors called HOAT) is recommended. This coolant offers the best engine cooling without corrosion when mixed with 50% distilled water.
It is clear. If it is at room temperature, and 100% Ethylene glycol is clear.
propylene gylcol is Green in colour and is used in a number of applications as it is much less toxic than blue coolant. Although it requires a more specialist tester than standard coolant and cost from £8 upwards
Burning coolant typically produces a sweet-smelling, bluish or grayish smoke. This occurs due to the combustion of antifreeze, which contains ethylene glycol or propylene glycol. If you see this type of smoke, it may indicate an engine issue, such as a blown head gasket or a leak in the cooling system. It's advisable to address the problem promptly to prevent further engine damage.
The color of glycol depends on the additives used during its manufacturing process. Yellow glycol usually contains an inhibitor package specifically designed for corrosion protection in industrial systems, while red glycol typically includes a different set of inhibitors for automotive applications. These additives give the glycol its distinctive color.
The color of glycol pipe lines can vary, but they are commonly painted blue or green to help distinguish them from other types of pipes. These colors can also indicate that the pipes contain a cooling agent like glycol.
For a 1999 GMC Jimmy, it's recommended to use a green, ethylene glycol-based coolant, typically known as conventional coolant. However, if the vehicle has been maintained with Dex-Cool, which is orange or pink, you should continue using that to avoid compatibility issues. Always check your owner's manual for specific recommendations and to ensure proper maintenance.
IT doesn't matter what color coolant you use, it matters by what mixture you use it. Some ethylene glycol coolants are yellow, like Pres-tone for example, others are green. Follow the direction's on the jug for correct mixtures as some are premixed and others are not. If you already have coolant in your truck, and your wondering why it's one color or another, don't worry about the color, use a $1.00 hydrometer from Pep Boys, Auto Zone or anywhere, and check the mixture of the coolant to make sure your vehicles water coolant mixture will not freeze at a certain temperature, like 10 below or 20 below the freezing mark or what ever the manufacturer states it should be. It was built with green.
"Engine coolant" can mean water or anti-freeze, whichever circulates through the engine to draw heat from the block, through the radiator where it is cooled by the fan and then recirculated. Anti-freeze (ethylene glycol, which is sweet-tasting and often fatally ingested by pets and children) is preferred over water because it doesn't promote rust and is a more effective coolant. There are numerous types of coolant/antifreeze on the market and NO they are not all the same. Though many contain ethylene or proplyene glycol the corrosion and rust inhibitors vary greatly from type to type. For example Dexcool (orange) is an HOAT coolant and should not be used in ford motor vehicles. You should follow the manufacturers instructions and use the correct coolant. No matter what some companies say i.e. prestone, there is no such thing as "any make, any model, any color" coolant.
Most new coolant is tinted red or green. If you have a different color than that look into it a little further. You may have oil in you coolant causing it to be a brown color.