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Kira-kira Kenapa ya, Oli Mesin yang Sudah Dipakai Berubah Menjadi Hitam?
Uzone.id --Oli mesin mobil punya beragam merek dan jenis.
Kalau dilihat dari warnanya pun berbeda-beda, ada yang bening, kuning, dan bahkan merah.
Namun, ketika oli sudah digunakan warnanya selalu sama, yaitu berubah menjadi hitam.
Apa yang menyebabkan hal ini terjadi?
Selain berfungsi sebagai pelumas pada mesin, oli juga berfungsi untuk membersihkan internal mesin.
Proses pembakaran mesin itu menghasilkan residu atau kotoran.
Kotoran sisa pembakaran ini dibersihkan dan dibawa oleh oli mesin.
Jadi beberapa oli itu mengandung deterjen untuk membersihkan sisa pembakaran yang timbul saat mesin bekerja yang kemudian dibawa oleh oli.
Baca Juga: Setelah Gesits, Indonesia Produksi Gelis
Sisa karbon hasil sisa pembakaran tersebut ikut bercampur dengan oli yang menyebabkan warna oli berubah menjadi hitam.
Saat piston naik, oli berada di bawahnya, baru setelah itu disapu oleh ring sisa karbon bercampur dengan oli.
Kalau di mesin diesel sudah pasti oli jadi lebih cepat hitam karena tercampur dengan bahan bakar diesel.