8/12/2023 0 Comments Dexcool coolant brownThis can be found at any car shop/parts store or online. One should not forget to change their coolant because in the winter time, the engine can suffer irremediable damage.Ĭoolant (Antifreeze) liquid is tested using a device called an Antifreeze/Coolant Tester. This is in theory, however in real world conditions, regardless of it’s quality, coolant (antifreeze) should be changed once every 2-5 years (average time after which it loses much of its benefits, unless specifically formulated as ‘lifetime’ on the bottle). Theoretically it should be good for an indefinite period. How often should the coolant liquid be changed? If foam appears, the cooling system’s efficiency might be reduced) (Coolant has special additives in it that prevents foam from forming. (Prevents limestone deposits and others similar to it which could reduce the cooling system’s efficiency) (The fluid will not attack the metals it comes in contact with and it won’t destroy it over time) However, besides these well known benefits, there are also others worth mentioning: Also protects the engine from freezing during winter. Has the role of helping the engine to cool in the summer time (it keeps the engine from boiling over). Coolant in the summer time works as an anti-boil and protects the system components from corrosion, which is a big deal especially with aluminum components. It lowers the freeze point of the coolant to protect it from freezing, even in the worst winter conditions. This is the reason coolant is mixed with distilled water in a minimum 50/50 proportion. Also in wintertime, water solidifies (freezes) and expands in volume which can crack your engine block, radiator and heater cores. In the summer time, cooling can be obtained using plain water in an emergency situation although not recommended much beyond this since it’s much easier to boil over as well. If an engine is used without coolant (antifreeze), it can suffer extended damage especially during winter. Not many know the importance of the different colors that are available today. is water.“The coolant is one of those fluids that everyone ignores and ends up being forgotten and used for years and years in the car’s cooling system. The only 'universal' coolant, in my book. but will they work as well as the coolant you generally run? No, because anything that's 'universal' is going to have tradeoffs. I would not mix these, even though that's their selling point (like someone with type 'O' blood). A flush is needed, at that point.Īnd then there's the universal coolants, the clears, the yellows, etc. If you have either of the two conditions above, don't just drain / refill. A yellowed coolant reserve / recovery bottle doesn't help, here, either. it's that it can be hard to tell if it's starting to get brown, as it ages. If there's one thing I don't like about Dex. As coolant loses it's protective capabilities as an anti-corrosive, you may see coolant get a brownish tinge as it gets older. That indicates lubricity in the system and keeps things like the water pump in good shape. Good coolant will leave a very slightly oily or greasy or 'slick' residue on your fingers. Signs to look for to know when it's time to R&R. That also gives you a good opportunity to change out wear components like hoses, etc., as needed / warranted. But two bottles of coolant, and 2 gallons of distilled water is pretty cheap, at 3 year intervals. Might it last longer than 3 years? Probably, to tell the truth. If you do a straight drain / refill at that interval, you'll likely never have a problem with your cooling system, and you'll never need to worry about disturbing the 50/50 balance. However, once it's removed, the interval becomes more time-based, and you generally see 3 years specified (for most vehicles, not just the ones using Dex). the factory fill is good for 150,000 miles, per GM. But outside of that, I'm fine with the Dex - it costs no more, and lasts as long.Īs far as change interval. Reason to switch? For me, it would be potential scarcity of Dexcool. No joke!Ĭan you switch? Yes, but you have to remove *all* the old, and flush thoroughly with water, before introducing the new. Preferably distilled, but if it's a choice between sewer water and a different coolant. If you ever get into an emergency situation, and need to add. When I travel far from home (towing, camping), I always make sure I have extra coolant. Your engine can run one or the other, but not both. When the two are mixed, a gel forms, and that clogs up the coolant system. The green is generally ethylene glycol-based. If you mix orange & green coolant together, that's when the problems begin.ĭexcool uses Organic Acid Technology (OAT).
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