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may just be weak hose clamp or gasket. friend's oldsmobile lost fluid and didn't see where. drove untill
temperature was up and opened hood. there was a pin hole in heater hose and a fine spray coming out of it. we
wouldn't have found it without looking. colour of liquid
may not matter. on your own, you might like to drive at night time [ easier to see than in daylight] untill temperature up, open hood and use bright flashlight to see if you can find source of your leak. if spending money is not a problem, mechanic can pressurize cooling system and find leak.
Let me guess...When the temp gauge goes hot, the heater goes cold, and vice versa? Check your coolant level first in the radiator (when the engine is COLD) and also in the overflow reservoir. ONLY use a 50/50 mix of coolant and water, using the same COLOR coolant that is already in the radiator (if it's green, buy green, if it's orange/red, buy orange/red). Next thing to have checked/replaced is the thermostat which is inside the cooling system of the engine. Finally, and the most expensive, have the water pump checked/replaced.
I would put my money on low coolant level in the radiator. As the engine heats up, the coolant will "surge" through the system as the water pump tries to **** air through the system due to low coolant level. If the coolant isn't flowing, the heat can't escape the engine block and it starts to overheat.
That would be the low coolant light. Check the coolant reservoir with the engine cold. If the coolant is red or orange add "dexcool" extended life coolant. If the coolant is green than adding the regular green coolant is fine. The two different coolants should not be mixed.
Yes, These engines are a combination of aluminum castings and cast iron castings. The orange dexcool is designed to control the acidity of the coolant. If you put in green it is going to eat away at the aluminum. It could cause leaks in your head gaskets, intake gaskets, water pumps and promote clogging of important coolant areas in the block.
It'll be a semi transparent plastic container with either green or orange coolant in it. should be on the right hand side by the firewall I believe. Make sure the engine has been off for at least an hour and place a towel over the cap before opening. Open the cap slowly as there may be pressure built up and you don't want it to spray... Also do not mix green coolant with orange coolant...
Most manufs. do NOT recommend mixing Dexcool[your "Orange" coolant] and the older "Green" antifreeze unless it's an emergency. They're not really made of the same chemicals,and don't 'play' well together long term inside an engine. I've seen the pre-mixed coolant for sale, claiming a "universal" mixing ability with ANY type coolant. But, if it's my wallet and MY time involved, I'd track down the right/correct coolant your engine.
If your engine coolant is an orange or yellow color then yes you should stay away from the green antifreeze it will ruin gaskets and void any warrenty you have left. What year is your vehicle?
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