Of course still keep an eye on the temperature gauge in case of any issues. Instead of relying on the low coolant warning or the temperature gauge to see how your coolant level is doing, "proactively" check your coolant at least once a month (or like every week) and top it off. Personally, I would probably just keep driving it until it dies completely, as long as I dont really care about the engine that much and plan on buying another car afterwards. Any overheating can cause cracks or warping. Low coolant that is topped off can cause overheating due to trapped air in the system. Low coolant will cause overheating and can cause stress on the water pump. This wears out your oil and can cause sludge buildup and corrosion in the engine. Glycol in oil will not boil away like water and will form acids and affect your oil. Water in oil usually will end up evaporating out of the pcv. You might be able to smell the sweet antifreeze smell in the oil. These days, the detergents and dispersants in modern oil can reduce those appearance effects and can be harder to spot visually. I believe coolant in oil used to turn oil more brown and make it more foamy or milky.
#Low coolant crack
My guess is going to be a problem with your head gasket or some crack or warping in the head. If you do not have any leaks, then your coolant is most likely getting burned and/or going into your oil. $1600 and 24 hours later (which included a coolant flush and two oil changes, the first of which was to clear out coolant contamination), my car was running fine. Fortunately there was no damage to the engine, but unfortunately the manifold is apparently very inaccessible in the 2001 Malibu, requiring more time to replace it. Turns out the intake manifold gasket had failed which was causing the leak. I immediately stopped driving and had my car towed to the nearest repair shop. Not 48 hours later, I was on my way up a hill and suddenly the temperature gauge spiked up to the red line.
Is it safe to continue driving with low coolant as long as I continue to watch the temperature gauge? If not, what are the potential risks involved?Ībout a week or so after my original post, I decided to refill the coolant reservoir yet again and hope for the best.
#Low coolant full
The climate is mild here so there's no risk of freezing, and I do keep an eye on the temperature gauge - it doesn't seem to go very far above 180 degrees F in steady-state, which is about 10 degrees above where it sits with full coolant. I have a 2001 Chevy Malibu and have replaced the engine coolant in it twice in the last six months after the low coolant warning light came on, and the light has recently come on again.
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