Is there a black spray paint I can use for now

[87lc2/wo2]

I have a original Black 1987 Turbo T I'm looking to protect it from the elements, however I cannot afford a paint job now. Is there a protective paint I can use to put over the oxidized paint surface to protect it for now and one that doesn't look awful? Preferably black. I.E. Duplicolor semi-gloss? I plan to sand the surface before I paint it.