Sunday, December 6th, 2009 AT 12:16 AM
Recently my minivan has over 170,000 miles and tempature gauge was going up and down. Also on occasion would overheat. Car was using a lot of coolant and suspected coolant was leaking somewhere. Mechanic found leak at intake gasket and replaced lower intake gasket which cost about $1000. About 3 weeks after car overheated again and white smoke was coming from exhaust. Now mechanic thinks its head gasket. Due to high cost of fixing head gasket and time involved, we are thinking of using a sealant to correct the problem. Would you recommend using a sealant to fix this issue and if so which one? Also should mechanic have checked for head gasket when replacing intake gasket?

