Crude oil that has been partially processed and is no longer usable in its current form

Oil that has become inactive or non-functional

तेल जो निष्क्रिय या गैर-कार्यात्मक हो गया है

English Usage: The machinery was filled with dead oil, requiring a full replacement.

Hindi Usage: मशीनरी में मारण तेल भरा हुआ था, जिसके लिए पूर्ण प्रतिस्थापन की आवश्यकता थी।