Which liquid takes the longest to make a nail rust?

Hi,
I'm Savannah and I am doing another science project and I have to pick one more liquid. My question is: Which liquid takes the longest to make a nail rust? I'm going to use salt water, vinegar, and "?" What else should I use.

Try motor oil, Savannah.

Ted Mooney, P.E. finishing.com Brick, New Jersey

I am doing a science fair project on rusting nails. I am going to place one nail in four jars each containing different liquids, water, saltwater, bleach and vinigar. The results will be evaluated by weighing each nail every day for 4 weeks and recording the results. My question is, should I cover the jars or not? Will it have any effect on how fast they rust? Thank You.

I would say yes, Kalina, because both vinegar and bleach get their activity from gases that are dissolved into them and will dissipate over time. That's why they smell sharply.

Ted Mooney, P.E. finishing.com Brick, New Jersey