318 - High Oil Pressure

nm9stheham said

Good. How long did you run it before changing to the synthetic?

And as for the 'acceptable' level of blowby with the PCV pulled out of the valve cover, a good amount would be for some vapors to just slowly drift out of the valve cover at idle. Again, it is hard to quantify, for me at least....you do enough engines and you get used to what is normal.

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I only used it to break-in the engine for 30 minutes plus maybe 15 more minutes here and there after break in with maybe 5-10 miles. I changed the oil after break in to look for metal shavings.

The gauge read the same high pressure with the break-in oil also.

I am not sure on the blowby. I would assume it was an acceptable amount. The breather just looked like 'steam' or a light mist was coming out of it.