oil leak on 2003 Jeep Liberty

hello , i have a jeep liberty 2003 that has an oil leak, i went to a mechanic and after checking on it he told me that we should change a part placed just under the main gear not the other 4 wheel gear. I changed it but still leaking , i went to the mechanic once again and after checking on it he told me that the oil leak this time could be from a part placed between the engine and the main gear , or propably from something else. so please any idea about this issue? cause i keep wasting money just for oil leak, thank you for your reply.

by in Bayamon, PR on May 07, 2011
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2 answers 1 comment
ANSWER by , May 15, 2013
ANSWER by , May 07, 2011
To replace the crankshaft rear main seal the transmission has to be removed. Its a big job. 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 visible 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.
COMMENT by , May 07, 2011
hello patrick , well the oil color is a little dark brown as i've changed it from a while , and the oil is leaking from the driver side under my leggs little to the right. Anyway thx to the help and hope that the major problem wont be the cranckshaft rear main . And i have a question , when i park leaning upwards or downwards and take up the hand brake ,the vehicle wont directly park, is it normal ? or i should check it with my mechanic ? thank you patrick for your reply