Jūn-ku̍t-che (潤滑劑) ia̍h-sī jūn-ku̍t-iû (潤滑油) sī kài-ji̍p nn̄g ê ūn-tōng-thé tiong-ng ê piáu-bīn, lâi kiám-chió mô͘-chhat-le̍k kap bôa-sńg, jî-chhiáⁿ koh ē-ēng cheng-ka hāu-lu̍t ê bu̍t-chit; jūn-ku̍t-che thong-siông sī e̍k-thé. Siōng-chia̍p-khoàⁿ ê kang-gia̍p-ēng ê o͘-iû chiū sī iōng-lâi pó-hō͘ ki-hāi lāi-pō͘ ê ūn-tōng pō͘-kiāⁿ. Tī i-ha̍k hong-bīn, iā ū jîn-thé jūn-ku̍t-che ê ūn-iōng.

O͘-iûlōe-jiân-ki teh iōng ê jūn-ku̍t-che.