Dense liquids: Do you currently have car insurance? Insurance is mandatory to drive in Ohio Yes I have insurance. But please show me your best quotes. No, please help me find the best insurance. Question Dense liquids: Answers Cannot fill a tank. May easily cause a tank to exceed legal weight limits. Should not be transported in a tank. May create a static charge. Explanation A tank full of dense liquid may exceed legal weight limits more easily than a tank full of liquid that is not as dense. For this reason, it may be wise to only fill your tank partially when transporting especially heavy liquids.