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.
My 2006 F150 just turned over 31,000 miles. During the most recent oil change at the local Ford dealership they found the rear end pinion seal leaking and replaced it-topped up the oil. A few weeks later I noticed a humming noise or light roar coming from the rear end.