On my 98 Expedition with 4R100 tranny, I have been chasing a fluid seepage issue. The truck is parked nose down on a slight decline of the driveway. I have done a drain, filter change and refill with Max Life Synthetic (Same as I have been running for years), Also drained torque converter.
Fluid appeared to be leaking around front pan bolts after the fluid change, so I removed pan, cleaned all surfaces on pan and transmission very well, put on new factory gasket (dry), torqued bolts to spec (10-11 ft/lbs). Refilled and it still leaks on bolt heads.
This picture is after 12 hours after wiping everything dry
Any ideas of cause and solution?
I am thinking of dropping the pan again and using Hylomar between gasket and tranny and between gasket and pan surfaces, but that is a last resort. I don't see why it should need any additional sealant, other than the new gasket...besides the fact that it leaks
Fluid appeared to be leaking around front pan bolts after the fluid change, so I removed pan, cleaned all surfaces on pan and transmission very well, put on new factory gasket (dry), torqued bolts to spec (10-11 ft/lbs). Refilled and it still leaks on bolt heads.
This picture is after 12 hours after wiping everything dry
Any ideas of cause and solution?
I am thinking of dropping the pan again and using Hylomar between gasket and tranny and between gasket and pan surfaces, but that is a last resort. I don't see why it should need any additional sealant, other than the new gasket...besides the fact that it leaks