Reflux can damage one kidney more than the other. If one kidney is badly scarred it might need removing for two possible reasons. Firstly a damaged kidney can cause high blood pressure. This will need life long treatment with drugs to prevent the blood pressure damaging his blood vessels and other organs (including his good kidney).
The average cost for a rear main seal replacement is between $659 to $860. Labor costs are estimated between $631 to $797 while parts are priced between $28 to $63.
1 Put the drain plug back in! The drain plug will use a crush ring to ensure a proper seal and no leaks. The filter and crush ring for the drain plug cost $17 at the dealer.  Add the new oil. Once the filter and drain plug are in place and secure, refill the engine with oil from the normal oil cap in the rear trunk. It should take approximately 10 quarts. Afterward, check the dipstick to ensure that the oil level is correct.