1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

my car is eating the anitfreeze

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Old Apr 1, 2005 | 09:13 PM
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Default my car is eating the anitfreeze

car is running through antifreeze, but there is no sign of a leak, no drips. i have a 98 se can anyone help with the problem
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Old Apr 1, 2005 | 09:15 PM
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Default Re: my car is eating the anitfreeze

Originally Posted by enpony
car is running through antifreeze, but there is no sign of a leak, no drips. i have a 98 se can anyone help with the problem
UPPER INTAKE FAILURE.....does the oil look milky???....get the oil out of there immediately.....dont drive the car
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Old Apr 1, 2005 | 09:17 PM
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oil is clean checked three times wiped clean with no smell not cloud at all
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Old Apr 1, 2005 | 09:22 PM
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Originally Posted by enpony
oil is clean checked three times wiped clean with no smell not cloud at all
ok now that that is established....how much are you loosing are we talking all the coolent, the whole overflow bottle?
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Old Apr 1, 2005 | 09:25 PM
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hey how is it going ok there has to be a leak some where look around heater core, hose,radiator, upper intake,or comming out of your exhaust and look on the ground too

robert
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Old Apr 1, 2005 | 09:28 PM
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we are talking all the coolant in radiator and the overflow, there is nothing around the hose no moisture or wetness
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Old Apr 1, 2005 | 09:31 PM
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any thing on the ground water pump floor wet heart core car running out the exhaust
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Old Apr 1, 2005 | 09:33 PM
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nothing, any other problems it may be? I'm at a lost
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Old Apr 1, 2005 | 10:01 PM
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Head gasket maybe? Do you have thick white smoke coming out of your exhaust? That indicates antifreeze burning because of a head gasket failure. How often do you add antifreeze and how much? If you can't find any leaks, and if its not in the oil, the head gasket is the only thing it can be.
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Old Apr 1, 2005 | 10:20 PM
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If there is no external leak and you know you are losing coolant, and you have established that coolant is not getting into the oil, then the leak must be internal, and on the combustion side. 95-98 Series II engines are prone to intake manifold gasket failures and burn-throughs which can send coolant into a combustion chamber. In that case, you should be able to see some white smoke out the exhaust or smell the sweet smell of coolant at the exhaust pipe when the car is running, especially just after start up.

Sometimes external leaks only occur under pressure. You can have a shop pressure test the cooling system to help you find the leak.

If the leak is internal and it is bad enough, it can destroy your engine by filling a cylinder with coolant. Upon start-up, the engine will try unsuccessfully to compress the coolant and instead will damage a piston, connecting rod, crankshaft, and/or starter. Most of which will be very expensive to repair.

It is not a good idea to ignore this problem. I suggest you do a pressure test to help locate the leak.
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