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1959 Series 62 Coupe
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Discussion Starter #1 (Edited)
1972 Eldorado - Coolant Miraculously Disappeared Over Winter

When I brought my 1972 Eldorado out of storage last week, it almost instantly started overheating. I saw no signs of a coolant leak prior to this and have since filled the car with over 2 gallons of coolant and no leak has surfaced. The car drives fine with no issues and isn't overheating; no smoke, no coolant in the oil; etc.

I can't, for the life of me, figure out how this happened.

Has anyone experienced anything similar?

The engine is, naturally, a 500 Cu. In. with 88k on it.
 

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2003 Deville base, 69 Eldorado, 68 Impala, If I tell you the rest......well....
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492 Posts
It overheated when you took it out? But now it doesn't? Just coolant loss? Do a head gasket check. You can have a internal leak and it hasn't shown it self. Make sure all hoses are tight to block and radiator.
 

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1959 Series 62 Coupe
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13 Posts
Discussion Starter #3
That is correct. It only overheated because there was NO coolant left. After I filled up the system, there were no problems. No blowback, no smoking, nothing that seemed out of place.

I put a new radiator in last fall, before it sat for winter, and flushed the coolant system then. I keep looking for a sign of a leak, but it confounds me. Since the car had no coolant in the oil or valve covers and it only disappeared while the car wasn't used for several months.
 

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2003 Deville base, 69 Eldorado, 68 Impala, If I tell you the rest......well....
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492 Posts
If it doesn't do it while your driving some thing is lose. Puddles? Re check everything, if you had no coolant it' s leaking from a lose fitting or internal.
 
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