The Supremacy Clause is contained in Article VI.
It states that: This Constitution, and the laws of the United States which shall be made in pursuance thereof; and all treaties made, or which shall be made, under the authority of the United States, shall be the supreme law of the land; and the judges in every state shall be bound thereby, anything in the Constitution or laws of any State to the contrary notwithstanding.
So, the Federal Constitution stands above all the rest.
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The Constitution provides that an amendment may be proposed either by the Congress with a two-thirds majority vote in both the House of Representatives and the Senate or by a constitutional convention called for by two-thirds of the State legislatures.
Answer:
I generally recommend checking your car's oil at least once a month, if not more frequently. Your oil probably only needs to be changed between two and four times per year, which means that if you only rely on oil changes, you could have an unchecked issue for months before it's fixed.