oil leak on 1994 Cadillac DeVille

car only leaks oil when running...Is it the oil sending unit?

by in Corona, CA on May 05, 2010
1 answer
ANSWER by on May 05, 2010
That engine gets a lot of oil leaks. To pin point where oil is leaking from the engine may need to steam clean the engine first. Starting with a clean engine and then running the engine it may be easier to identify specific leaks. If the oil leak can not be identified, florescent dye may need to be added to the oil and the engine run for a while. After running the engine the dye used has florescence in the dye is visable under UV light and it helps pin points the source of the leak. Identify the color of the oil to differentiate whether the oil leak is steering fluid, brake fluid, or transmission fluid and try to identify the location of the fluid leak under the vehicle, ie front of engine compartment, rear of engine compartment , passenger or driver's side of vehicle.
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