BG Products BG Products wear out gaskets Nationwide!!. I owned my Nissian Pathfinder since it was brand new. I did every service interval faithfully around 40,000 miles I did a BG engine flush and MOA additive with semi synthetic oil at every oil change. At 60,000 I did BG differential fluid exchange as required by Nissian service interval. Now my Pathfinder has 90,000 and the valve cover gasket is leaking, the oil filter housing is leaking, the gasket in the front differental is leaking. I called BG and of course there product didnt have anything to do with the gaskets all leaking and there wonderful warrenty doesnt cover it. Dont waste your money on this product just do your service intervals as required.