油性 is read as ゆせい (yusei) and means oil-based.
ゆせい
yusei
ゆせいぺん
permanent marker
ゆせいぺんき
oil paint
ゆせいまーかー
ゆせいまじっく
ゆせいとりょう
oil-based paint
しんゆせい
oleophilic
たいゆせい
oil resistance
ふかんせいゆ
non-drying oil
ゆでん
oil field
あぶら
oil
ゆだん
negligence
あぶらえ
oil painting