First you have to determine what is leaking and why. Look for the highest place you see the oil. Typically if the oil pan or its gasket are leaking, the oil won't drip up onto hot exhaust parts. Your mechanic would typically start by washing the engine with a degreaser so he can see where the oil is leaking out of. Another approach that works well for real slow leaks is to add a small bottle of dark purple dye to the oil, then search a day later with a black light. The dye will show up as a bright yellow stain that you can follow back to the source of the leak. Auto parts stores have the dye, and those that rent or borrow tools will usually have the black light.
Saturday, November 15th, 2014 AT 1:43 PM