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  • 1 Post By blykins
  • 1 Post By SBSerpent
  • 1 Post By Sydney

 
 
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Old 02-18-2023, 12:55 PM
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Cobra Make, Engine: Shelby CSX4005LA, Roush 427IR
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Originally Posted by SBSerpent View Post
Could the leak be caused by crankcase pressure issues? I do have a PCV on one valve cover and a breather on the other so the crankcase is being vented. The only thing that I did (about 1000 miles ago) was to swap the locations of the PCV/breather (i.e. I moved the PCV from DS cover to PS cover and vice verse for the breather). I can't imagine that being an issue and creating the oil leak.

I have also seen products where you put an additive in the oil and it resolves main seal leaks. Blue Devil Rear Main Sealer. Bad idea? How does something like that work for the rear seal and not the front (since it isn't advertised for the front seal)?
The PCV and breather are not interchangeable. One side is intake, the other exhaust. So now you've got your intake side pulling air in backwards through the PCV (which is probably check-valved...)
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