postalguy Posted August 20, 2007 Share Posted August 20, 2007 RE: 1996 Cadillac Sedan de Ville, Northstar engineI cannot find the source of an oil leak. I've replaced the oil sending unit, the valve covers, the oil pan gasket, the oil filter, and it is dry around the oil pan drain plug. Any Ideas would be appreciated, thanks... Link to comment Share on other sites More sharing options...
postalguy Posted August 20, 2007 Author Share Posted August 20, 2007 George Link to comment Share on other sites More sharing options...
frazer Posted August 21, 2007 Share Posted August 21, 2007 GeorgeI used to work at a Cadillac dealership. We did what was called "block split" on the Northstar motors. Basically most of the whole motor was taken apart and all seals were replaced, there are many more seals and gaskets than you replaced. This often happened at 50-60K or less and our shop was backed up with these jobs.Mark Link to comment Share on other sites More sharing options...
postalguy Posted August 22, 2007 Author Share Posted August 22, 2007 Thanks for the excellent input. Can the seals and gaskets you refer to be replaced without removing the engine from the car?Thanks... Link to comment Share on other sites More sharing options...
frazer Posted August 22, 2007 Share Posted August 22, 2007 As I recall the engine had to be removed, as least that s the way our mechanics did it. Any Cad dealer should be able to do it. Link to comment Share on other sites More sharing options...
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