Open the hood of the car and look for a black screw on cap that either says "oil" or has an "S" on it. Should look like the one in the link below. http://www.wholesaleautoparts.parts/shopbyvehicleafmkt/honda/1 994/passport/_/_/oil-filler-cap?submodel=LX
What kind of oil? Engine oil, transmission oil, gear oil.
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