my 2000 Ex, 26K has a head gasket leak. Dealer diagnosed my coolant leak today and has ordered the part. They had to call tech line on the problem and apparently there has only been 1 or 2 other Odysseys with this problem. I am really depressed that a defect this major happened at 26K miles and they have to disassemble so much to replace the gasket. Van has been almost flawless until now and I planned to keep it many years... now I have lost some faith in the product. this is my 4th Honda.