Dimple Magnetic Oil Drain Plug M16x1.5x12 - BRZ 2013-2017 / FR-S 2013-2016 / WRX 2015-2017
The simple fact is the oils in your car work best when they are uncontaminated. Continuous friction of moving parts creates tiny metal particles that are measured in microns. A micron is one millionth of a meter. 25 microns is .001”… yeah, one thousands of an inch. Oil filters can remove particles larger than 35 microns, but what happens to the rest? They get circulated back thru your engine wearing down your parts even more.
That is where Dimple comes in. Their magnets are the strongest high temperature grade neodymium magnets in the world. They simply rip those smaller particles out of the oil stream. Regular neodymium magnets start to lose their magnetism at 175f but Dimple’s have been proven to hold their magnetism at well over 300f.
A couple of years ago Subaru began using a new size engine drain plug on the above models from an M20 to the smaller M16X1.5X12. If the wrench required to take off the plug is 14mm then your car needs the M16 plug.
This size also fits the transmission oil pan on the 2004-2007 STI.
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