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Old 01-05-2019, 10:13 AM   #19
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Dirty oil pooling affecting head gasket life.

I had not considered that.

I found it interesting that Subaru changed the oil change interval.

My '14 Forester required 7500 mile changes.

My '17 and '18 Foresters required 6000 mile changes.

The same 0-20 fuel economy full synthetic oil is specified.

Could the cleaner oil help the head gaskets live longer?
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