Fluid Leaks
1991 Ford Explorer
By Austin Davis
Feb 13, 2007, 10:51

Reader Question: On my 1991 Ford Explorer 4.0L driver's side head on the front-end of the head there is a small crack midway vertically between the top and bottom of the head.


The coolant leak is external. What do you recommend for a stop leak sealer? While the amount of leakage is small and slow, it is continually seeping/dribbling while the engine is running.


I have read your suggestions about leaving the sealer in for 500-1000 miles before draining, flushing and refilling with coolant mix.


Thanks for you help.

Ray



Hey Ray,


If this is a coolant leak I would try the K&W engine block sealer additive.


It will probably work perfectly in this situation.

Here is the article again with my instructions:


Engine Block Sealer Additive Tips


Blessings,
Austin Davis

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