If you use too much of it you might need to flush the coolant system a couple of times.Įxperiment with washing-up liquid in a washing up bowl at the kitchen sink and you will see how little of it is necessary to create enough bubbles. You will need to flush it out with cold water afterwards. If you do use washing up liquid you have to remember that it is VERY concentrated in the form in which we usually buy it.so you will need VERY LITTLE of it. Washing up liquid can be used, (remember how we always use it in water to detect a leak in a tyre inner tube, be it bicycle or car). You will not cause any damage to an engine, or its seals or gaskets with a simple coloured trace element in a cooling system to detect a leak. All that is required afterwards, and presumably once the leak has been detected, is to drain and flush, then after any necessary repairs all that is required is to refill the system with coolant. I have previously used a food colourant liquid as a dye and it has worked well. Where fluorescent dyes come into their own is in detecting pin-prick holes in a radiator matrix, (often difficult to spot), or at, say, a radiator cap seal.Īny trace colourant in the water / coolant of an engine coolant system will usually suffice. Leaks are most often found under the bonnet / hood. Sometimes the air-con might leak into the vehicle, as might engine coolant from a heater internal to a vehicles passenger compartment are pretty rare. Most leaking fluids can be easily found if the leak is from a hose which might be split or life expended and due to be changed.leaking fluid is fairly easy to detected, sometimes external to the vehicle, perhaps on the floor. UV dyes are often used for air- con leaks, although as kits or bottles they can be expensive. The UV dyes are not really necessary for coolant leaks, although they might make a leak easier to will need a UV torch to see a leak to best effect. It was usually green stuff, sometimes yellow, and could easily be seen, even in difficult places with an ordinary, yes ordinary, torch, if necessary. Years ago you could just buy a coloured dye and add this to the coolant. Been running it for years in several of our vehicles and family's vehicles.There is a distinction between fluorescent coolant dye and UV (Ultra Violet light) flourescent coolant dye. The only Toyota the Zerex isn't in is my wife's '19 Corolla. My rig is 5.5 years old and I've done 2 DAFs in the last couple of years. I personally just don't like mixing different colors just because it's messier looking. With that in mind, it's better to stick with OE or Zerex Pink juice to keep the color consistent.though the color itself isn't that important. In my opinion catching coolant early and doing a simple drain and fill (DAF) on the radiator every couple of years will thwart most internal rot. No worries 's compatible with SLLC regardless of what people say. As for how long it can last? Generally speaking SLLC is around 5 years/100k miles.though some models are reported to call for 10 year/150k. But it does need to changed once in awhile to maintain proper corrosion protection. Most people just don't think about coolant. Click to expand.Time and mileage both play a factor.
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