Quote:
Originally Posted by sneaky_pete
I know nothing about these engines but with all these failures surely a better solution would be for Toyota/Subaru to come up with a traditional gasket solution to seal these up instead of using liquid sealant? Probably not even possible due to engine design?
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Not going to happen. There are spots where 3 parts come together and with varying tolerances due to manufacturing coupled with assembly variances, the gaps are never the same. There would be no way to make a rubber gasket that would accommodate all this variance. There is a reason they all eventually leak at the bottom right of the timing cover (the spot where there are several intersections). If a standard gasket was used it would leak right from the factory.