If its only a small rise in the fluid level of the . Unfortunately, cars are not always known for being problem-free, and therefore problems can occur that cause the coolant level to drop. However, after letting it "come to rest" for a while with the computer off, the level . Just so happens the "Coolant level low" came on the other day (and has persisted). Ways to check for head gasket failure are an exhaust sniffer test, cylinder compression test, oil sample test . 5h. After topping it back up I noticed that it kept a falling again and so I took it into get looked at. Is it normal for the coolant level to drop? Answer (1 of 16): It's possible to have a hairline crack in the end tanks of your radiator. You can use diluted coolant by itself, or a 50/50 mixture of concentrated coolant and distilled water. To check for a faulty head gasket, pull the oil dipstick. Phosphate (green) coolant is more abrasive than the newer coolants and can wear out the seal. This is was pretty odd considering I only have 16,000 miles on the car. The extra drop to the bottom of the reservoir could have been due to the recent outdoor temp drop to -7C. Between min and max is a wide range. If the level is below the minimum line, top it up . If frequent additions are required, see an authorized dealer for a cooling system inspection. I think I'll call a couple of Toyota dealers tomorrow to see what they think. The causes of coolant loss can be serious from a cracked head gasket to minor as a leaky hose. I would have the oil checked for any coolant contamination, it might not hurt to replace the radiator cap if it's not holding pressure. BlueDevil Pro on June 21, 2021 at 8:30 am. I've used it for 40 years with very good results. A 1" drop in the coolant level after a year of driving is pretty standard. Thread starter teddyboy; Start date Jul 1, 2012 . When it heats up the level goes up a bit. Technician A says that a drop in the coolant level in the surge tank or coolant overflow reservoir when the engine cools indicates an internal engine leak. I have both an AU2 Futura and an NA Fairlane. It was found that with the engine functioning well with no leakage or damages, the coolant level should drop about 0.25" in 4 months. It could be a . Bring the level to F, but do not overfill. If the coolant level is low, add the correct coolant to the reservoir (not the radiator itself). line. You must use a coolant that is compatible with that already in your system. That being said, if your level was low and you added coolant, sometimes there is an air pocket that needs to "work its way out" and you will see the cold fill level drop some as it does. Yes, due to the extreme engine temperature, the water element within the Coolant tends to evaporate, resulting in a coolant level drop. Well, I had my level at the max marking when cold, and when the engine got to normal temperature, the pressurization sent the coolant level DOWN . BTW - according to Ford, it is best to "vacuum fill" the system - so that you avoid the air pockets. Keep an eye on the coolant level and if it doesn't drop that's all it was. Slight drop in the coolant level as you use your car for months is not alarming and considered to be normal. I only added about one inch of coolant to the tank so I hope that's not too bad for a whole years worth of driving. While towing a load and climbing a grade, the pressure might climb to 9 or 10 psi max, but I have never seen higher than 10 psi, even while applying heavy throttle. Does coolant level go up or down when hot? So if over a period of several years you notice that the level in the reservoir gradually went down by a few ounces, that's pretty normal as long as there is no evidence of a leak such as steam, dripping coolant, or a coolant smell and it doesn't continue to drop at a noticeable rate. If the reserve tank is empty, remove the radiator cap and refill as required. They told me that it was normal for a coolant level to drop over time and that I should simply keep an eye on the levels. In winters, coolant aids in lowering the freezing point and, in turn, increasing the boiling point of the liquid, thus the name "antifreeze." Why Is Coolant Disappearing From Reservoir Secretively? Edited May 18, 2016 by wizard maintain a 55-60% antifreeze level to prevent coolant boiling • Marine applications should maintain 30-60% antifreeze if the system operates above 195º SPECIFICATIONS • Conventional Coolant: 8.0 to 11 • ELC Formulation: typically 7.0 to 9.5; if pH is above 9.5, possible ELC and conventional coolant mixing • Correct cause of drop in pH A big leakage loses the natural balance of coolant and the coolant evaporates quickly. is it normal for coolant level to drop? Start first by filling the coolant up to the full line and watch it day by day and see if you get low again. Before you top off your coolant, inspect your current coolant for any unusual coloring or contaminants. At the same time, the constant spillage of the coolant will affect the engine head gasket. Buy breakdown cover. Also, due to the availability of an overflow reservoir, which makes one end of the Coolant open, tends to spill out extra Coolant or jump Coolant out of the system. While watching th coolant level rev the engine to 2000rpm you should see the coolant level drop momentarily and when allowed to idle it should return to normal (this means the W/P is moving coolant). It is normal for ANY CAR to lose a slight amount of coolant over an oil change interval time period. Ed B. I will continue to watch the coolant level to see if there is any additional drop. Low Coolant May Not Always Indicate a Leak in Your Radiator How much coolant loss is normal? Technician B says that the drop in the level is normal. The level of the coolant ought to be between those two lines. When the engine is hot, the crack (under pressure) allows a tiny amount of coolant out as steam - virtually impossible to see when the engine is running and hot. Sep 20, 2013. Is it normal for the coolant level to drop? An old engine is another reason for excessive coolant burn. Under normal road testing without a load, the maximum pressure reading I can build on the coolant pressure gauge is 6-8 psi. If coolant can't be detected on the outside of the engine then there is an internal loss somewhere. Each time, i have noticed the coolant level at around the lower line. Click to see full answer. No. As the general temperature of all coolant reaches a normal, the pressure increases slightly due to the hotter temperature and a little steam. I did not check it myself but they said they topped it off and it *IS* normal for the engine to consume small amounts of coolant and oil. Normally you set a coolant level in the plastic spherical coolant reservoir to between the min and max line markings when the engine is cold. Yes, due to the extreme engine temperature, the water element within the Coolant tends to evaporate, resulting in a coolant level drop. Is it normal for coolant reservoir to go down? Hey guys, So today I turned on my car and it told me that my coolant level was low. This will cause the coolant fluid levels to drop without any noticeable leaks under the coolant reservoir, hoses or radiator. That's normal. during the past few colder months, I've noticed that the coolant level in my reservoir tank drops between half an inch to an inch below the "cold fill level" mark(on the reservoir tank) per about 1200 miles. Coolant comes in a range of colors, so it's normal for it to be red, blue, yellow or green. 900+ miles and 3 months--level has dropped 5mm from the MAX line, the point of "origin." This is close to 1/4 inch." dirty hippie, I've seen a slow drop in coolant level in every car I've ever driven or taken care of. Its actually in the manual. On both cars the level will always remain constant, near the "min" level mark. Finally, the coolant level on my 2006 Sienna, 1993 Caprice, and 1995 Dakota does not drop between changes (~3 years). If the level is close to or lower than the "LOW" level mark, add coolant up to the "FULL" level mark. Possible signs of head gasket failure include: I did this numerous times and for several days to remove as much of this crud with the engine hot. Some will read high on a dash gauge then drop when fan (s) kick on and normal for some of those. It doesn't seem normal to drop to if you filled it to max when the engine when cold, all those extra coolant is just going to spill over when the engine is hot, so you will be. Even though your cooling system runs in a closed-loop, the system isn't entirely leakproof. If you see that it's dropped, get a garage to take a look. If the coolant level is low, add enough distilled (deionized) water. The cooling system is sealed and should not change levels at all. This is all considered a normal part of how the cooling system works. The reservoir should be clear plastic, so you can easily see the level of coolant and the maximum fill line. After filling, make sure that the cap of the expansion tank is replaced and tightened. Quote: Originally Posted by amg8. The coolant in the radiator should be just below the filler neck. Low coolant levels or running with aged coolant are common problems that are observable in cars. What I do think is "normal" is that some Atlases came with a low-fill from the factory and need a top-up or two to get them correct. Yes, it is common for the coolant level to drop in your car, both due to use and other issues like coolant leakages. When adding any liquid to your car such as Prestone coolant/antifreeze, it's important to ensure the engine has cooled before unscrewing the cap of the expansion tank as the coolant operates at around 90°C. 2" below the max. Hi all, I have a 97 T-bird with the 4.6L sohc v-8. A coolant level drop can be caused by various things, going from ineffectively fixed hose clasps, worn hoses, or a box of rogue interstate nails that transformed your radiator into Swiss cheese. Since I've put new coolant in back in 12/12 when I bought the car, I haven't had to add a drop to the system since I've had it (except when I had a small drip from the lower hose due to a loose clamp), and the level always stays at the bottom of the "MAX" mark. I will check the oil to see if I notice any change in color or texture. The cooling system is letting out air when hot and running, then when it cools down it is sucking in coolant from the over flow tank instead. Right to the bottom of the coolant tank. Tester. The oil seems OK - no coolant in the oil. Normal temp as I recall was about 185, and I don't recall it fluctuating much. I have been observing the engine coolant level drop slowly for the last 10K miles. Either way it's best to get it checked out sooner rather than later. The only time I noticed the drop in coolant level is after a long drive where engine was ECT reached the 210 degree range. If you maintain the proper range cold you won't have to worry about trying to keep it at a set mark. Wednesday 25th December 2013. Now, some of this is a difference in the coolant level in the reservoir when the pump is running and when the computer is off. In winters, coolant aids in lowering the freezing point and, in turn, increasing the boiling point of the liquid, thus the name "antifreeze." Why Is Coolant Disappearing From Reservoir Secretively? When I checked mine, the coolant was way under the black bar and thus triggered the warning. Mostly, the drop in liquid level is the result of problems related to the cooling system. Also, the overflow tank isn't really an accurate way of telling if you are losing coolant. All coolant level observations taken when the engine is cold, naturally. Obviously, because the liquid is flowing through the system during normal operation, the level in the reservoir is going to be lower. As the coolant spillage continues, it affects the head gasket, and all this results in the engine malfunctioning.
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