What should my differential fluid look like?
What should my differential fluid look like? What Does Differential Fluid Look Like? Differential fluid looks like engine oil but is thicker. What is this white milky stuff under my oil cap? You take the cap off of your valve cover to top off your oil or fill the crank case after an oil change and discover to your horror that there is some sort of white milky or creamy stuff coating the underside of the oil cap and down into the filler hole. What does it mean when lower unit gear oil is milky? When you see the milky...