Clean the steel with detergent, like Simple Green or anything like that.
Rub on the detergent with an old tooth brush, and get the brush clean in the process.
Rinse and dry the brush.
Hot rinse the steel in the sink.
While the steel is still hot, dry with paper towel, without getting finger prints on the steel.
When the steel is dry, but still hot, rub on G96 bluing flakes with the tooth brush. Scrub the blue in. It will turn black right away, but keep scrubbing for ~15 seconds.
Rinse the blue off under hot water while scrubbing with the tooth brush.
Clean the steel with detergent again.
Dry.
While still hot, apply Oxpho Blue with a tooth brush.
Scrub it in hard for a minute.
Cover the coating of Oxpho Blue with motor oil. Do not scrub the motor oil on.
Wait overnight.
Wash off the motor oil and Oxpho with detergent.
Rinse and dry.
Apply motor oil.
Wipe off excess motor oil.
Repeat if necessary to get a jet black and wear resistant finish.
The idea is that the G96 is dark, but not wear resistant. It is on the micro valleys of the steel surface.
The Oxpho Blue is wear resistant, but not that dark. It is on the micro ridges of the steel surface.
Sometimes a steel will not like these blues. Try Dicropan instead of G96.