HOAT coolants are derived from OAT coolants with the addition of silicate to protect aluminum surfaces. Your BMW, Porsche, Mercedes Benz, Audi or Volkswagen uses an HOAT coolant. What kind of antifreeze does a Mercedes use? Red antifreeze is more stable compared to green antifreeze. Green antifreeze is produced from IAT (inorganic acid technology). Red antifreeze is produced from HOAT (hybrid organic acid technology), which is a combination of both inorganic acid technology and organic acid technology. As it degrades, coolant loses its protective qualities, PH levels change, and corrosion sets in. Radiators, like most parts in your engine, are made of metal. See also Do deadlifts make arms bigger? What causes sludge in a car radiator?Ĭorrosion – this is the most common cause of sludge build-up in a radiator. If you notice that it generally means that there is excess oil that is entering into your combustion chambers. When this happens, you will likely see blue smoke coming from the exhaust. The centrifuge spins the fluid, drawing from the center to the outer regions of the device so that it reaches the engine.Ī head gasket leak is when coolant is leaked from your vehicle, combustion gasses or a combination of both. In a liquid cooled vehicle, a centrifugal water pump is used to circulate water while the engine runs. What type of pump is used in engine cooling system? Antifreeze – coolant that has not been mixed with water – tends to last even longer than pre-mixed engine coolant, though both last for years. Once opened, it will keep for years if stored in the original container. Heavy-duty versions may also contain nitrite or molybdate, or both, but they still fall in the OAT family.Ī sealed bottle of antifreeze has an indefinite shelf life. They generally do not contain silicate or borate. These additives rely primarily on carboxylic acids and azoles. OAT coolant additives stands for Organic Acid Technology. Mixing two formulas won’t cause any dangerous reactions or explosions, but it could turn your coolant into a sludgy chemical mixture that won’t be able to flow properly through your cooling system. This coolant is compatible with the models from carmakers like Hyundai, KIA and Honda.Ĭan You Mix Orange and Green Antifreeze? It’s never a good idea to mix two different colors or types of antifreeze. Phosphated HOAT uses phosphates along with organic acids to prevent corrosion. This coolant comes in pink or blue colour. See also Why does a narcissist want to destroy you? Why is my coolant pink? M30s OTOH, I'm pretty talented at killing those. I've tried my best to kill an m20 in the past without success, I'm not sure it's possible without really horrendous neglect. On the bright side, it's not an m5x, so it didn't 'splode or overheat. I'll probably repeat a few more times to get as much out as possible, then refill with antifreeze before the cold temperatures get here. I'll run that for a little while, then drain and fill again. I flushed and flushed and flushed, then filled with tap water. Too strong of a glycol presence combined with tap water and the depletion of the corrosion inhibitors seems to cause this sort of thing. Leftmost box on the strip for pH, that's 7.5 or less, so the additive package and reserve alkalinity had all been used up.Īccording to the InterTubes, this particular issue is why BMW specifies silicate-free coolants with distilled water for their systems. Rightmost box for freeze protection indicates freeze point -60 deg F or better, so pretty strong glycol presence. Some driveway forensics with a coolant test strip reveals: Yep, that's pretty much exactly what I'm seeing. I top them every single time they come in the shop, and the level is always "a bit low" but at the same exact level they were "a bit low" at the time before. In my experience, it will never get lower than that, but every single m50/ m52/ m54/ m56 cooling system level is always just barely below the "kalt wasser stand" after the system has been thoroughly heat cycled. Then when it cools down, the level for what ever reason is always below the "kalt wasser stand". When the cooling system is HOT, is pushes out all of the air from the expansion of the coolant, as well as a bit of the coolant. I do not have an explaination for the m20, but I believe the m50/ m52/ m54/ m56 expansion tanks were not properly designed for our climate. I do not have an explaination for why he has a chocolate milk cooling system now, but a bit of green coolant should not have caused that. Dex cool/ VW/ Audi coolant is NOT compatible with the green/ blue/ yellow coolant and will cause problems. Blue and green coolant SHOULD be completely compatible, though not the same.
0 Comments
Leave a Reply. |