Wow this thread has taken off.
OK question 1......No it doesn't. The SSM 47443 and the shop manual amendment was released around 6-8 months after the HG CSA so all the early recalls will have been done without reference to the amendment. It doesn't mean though that the mechanic that does later ones post amendment has actually followed the procedure. many simply don't check the shop manual once they've done a job once or twice if at all.
2. Maybe, possibly. Some post recall cars will be fine and not leak at all and some will. It's down to the quality of the machining I believe. Machining quality is dependent on a few variables such as rate of production and tool wear as 2 obvious examples, there are others.The manufacturer determines the rate versus the quality but there is variation such as when the tooling is changed for example. So fresh sharp tooling will give a better quality of finish than tooling getting to the end of life before sharpening or replacing. That's an example of how variation in quality occurs. Some of the cars with worse machining will probably seep oil and the better ones will be ok. I dont think there is a design issue more a manufacturing issue. As I've said I think Ford has prioritised speed of machining over quality of machining.
Some engines exhibit what I would call "oil sweating" along the head gasket gasket line.They only pass just enough oil to collect dust and dirt that might extend in some spots for an inch or so radius around the location.My RS has this at one location where the oil drain gallery is on the drivers side front of the head block interface. My Wifes 2.0L Escape has the same thing as well. Not worth worrying about and without tearing it apart I cant tell whether its seeping between the layers of the MLS gasket or it's machining on the head and deck. Most likely the machining. I've had other engines exhibit this as well including Ducati superbike and BMW engines which in those cases was down to head/barrel finish. I simply put them on a granite surface plate with fine wet and dry and flatten them off and correct the finish. Problem solved. On a car engine it off to the Machinist I'm afraid.
If your engine has what I've described above it's unlikely to worsen over time but if it has a leak that creates a mess and is enough to causes drips off engine components between oil changes then it needs correction which is different to the dirt gatherers I've described above.
If your factory assembled unmolested engine engine has over 5000 miles on it and doesn't leak or "sweat" along the gasket line then it's probably never going to and you can relax.
If it's a leaker then the best solution from a pure engineering perspective is a strip and machining and careful assembly. Sealant may also do the trick if you do it carefully and competently and its a localised issue.
Sorry for the long post but you now all know most of what I know or think I know about head gasket oil leaksTracing leaks is the next instalment,Ha.
Thank you, sir. I really appreciate you taking the time to explain everything & what to look for. It’s extremely helpful, especially for someone like me looking to buy a pre-owned on. Your replies on this forum are greatly appreciated & really makes a difference, whether it’s about the HG’s, warranty, ride quality, drive modes, brakes, prices etc. I learn everyday from reading your detailed posts.
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