Probably a blown head gasket caused by studs pulling out of the engine block. Very common with those engines.
The 1996 Cadillac STS Radiator does not have a drain plug
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There is none.
Cadillac STS was created in 2005.
No, ..
If that is the Northstar engine, yes.
CADILLAC STS is totally better
Cadillac STS-V was created in 2005.
The 1996 Cadillac STS with a 4.6L V8 Northstar engine takes 7.5 quarts of 10W30 Oil (I know, A LOT, right?). Synthetic oil is recommended by Cadillac but I disagree, I have run both regular and synthetic oil and had no problems whatsoever. Hope this helps.
By plugging a scan tool into the service port.
Following the 2008 Cadillac STS and 2010 model update, Cadillac decided to discontinue the STS. As a result, the last STS to be produced was put together on May 4, 2011.
how do you disassemble the dash of a 1994 cadillac seville sts