| 21. | Vegetable oil was used until 1873 when it was replaced with mineral oil.
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| 22. | Sources passionately disagree on the suitability of mineral oil as a carrier oil.
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| 23. | Potassium does not react with most hydrocarbons such as mineral oil or kerosene.
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| 24. | The transformer oil is sometimes mineral oil, similar to motor oil.
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| 25. | If this happens, apply a few drops of mineral oil and continue rubbing.
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| 26. | The original mineral oil was dropped in favour of petrol vapour, from 1898.
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| 27. | Common hydraulic fluids are based on mineral oil or water.
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| 28. | Hydrocarbon products are usually based on petroleum or mineral oils.
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| 29. | When hardness can be sacrificed, mineral oils are often used.
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| 30. | Two types of brake fluid are used today : mineral oil and DOT fluid.
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