Replacing Camshaft Sensor - is there enough clearance for allen key type torx?

[CloverHillCrawler]

However, oil has virtually no effect on magnetic fields, which is probably how the sensor works. But oil is not conductive either, so I am surprised that oil on the contacts would be a problem either.

Even though the oil may be non-conductive any contaminants or metal shavings in the oil can be conductive.