Question about 1992 Cadillac Seville

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I have a 1992 cadillac seville 4.9L i bought it knowing the head gasked was bad. was gonna use thermagasket try fix this problem. But have a pos bigger problem when I drained the oil it was full of water and water contaminated oil anyway. i was flushing the cooling system and all seemed ok but when filling the radiator with clean water oil plug still out it kept draining down looking under the car water was going right out the lower hose and out the oil pan shouldnt how is it getting past the water pump into the oil pan

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You have a bad head gasket. Both water and oil pass through the head gasket between the head and the block. Normally these are kept apart by the gasket. (The gasket has many holes in it, some are for oil, some are for water. The big round holes are for the pistons.)
You need to drain the water completely, remove the head, and replace the gasket with a new gasket. There is no "fix" other than this. This is a major repair, you need to buy a shop (service) manual for the full details of how to do this. If you have not made major repairs before, you should take it to a shop, this is NOT a job for a first-time do-it-yourselfer.

Posted on Sep 05, 2010

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It could have a problem behind the water pump/ timing cover. bu *** could be head gaskets. DO NOT put anything to try to fix this, it will not work and cause more damage. but your engine is already damaged.

Posted on Sep 05, 2010

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Improve the FixYa experience for everyone by voting. I want you to let me know if the solution(s) suggested were of any value. Constructive criticism is welcomed.

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I'm Ben and -- hopefully -- I can provide some meaningful assistance.
Sorry but the answer is no.

1991/1992 Part #REPB314517 Fits the following 1990-1992 Cadillac Seville submodels:

1991-1992: Base; 8 Cyl 4.9L; "FI, Naturally Aspirated, VIN B"
1991-1992: STS; 8 Cyl 4.9L; "FI, Naturally Aspirated, VIN B"

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