kridd12 Posted March 27, 2017 Share Posted March 27, 2017 Just throwing out a feeler here. Have a 2012 f150 eco boost and it has oil leaking out the bell housing. Previous shop replaced a rear main seal plate assembly and I found the plug on the back of the block o-ring was torn. Replaced that but after re-assembling found oil leaking out bell housing again. The valley of the motor was full of oil washed it out and shampooed off the engine and valley area. Ran for quite a while now but cannot see any leaks. Any one else have oil leaking in the valley on a 3.5 eco boost? Quote Link to comment Share on other sites More sharing options...
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