Does drain plug washer is really required to replace every oil change?

[SoleusBB]

2.2k for the fumoto F106S.. comes with the clip.

The sx model for recessed drain plug port is priced at 2.4k

Medyo may kamahalan nga. But compare nyo naman sa mga gumagastos ng $$$ para lang sa mga walang kwentang add ons ( tulad dun sa "Baduy car" thread)....

Kuripot din ako, but to be fair, mas may saysay naman na gastusan yan