Let’s ignore that quote. It’s widely known original factory installed 05-09 HGs leak oil and get worse over time.
No Subaru since 1994 mixes coolant and oil, don’t need to worry about that. It can happen but it’s an outlier.
250,000 is a decent chunk of miles. Choose wisely.
great stuff . don't you hate being too impatient to try one remedy at a time to know what really fixed it? My guess the stainless screws would not have made a difference on position of distributor changes. I reckon it was the shim trick. don't be a stranger, i am sure we all want to see non distorted pics of your steed