Last december local KW did in frame platinum kit on on my 99 T2000 with 3406E due to dropped liner. Truck had 978k miles at time of overhaul. Never hsd any oil leaks. 20k miles after in frame it started leaking oil behind fan hub. I lchecked front valve cover gasket and its good. From the top i cant see where is leaking from. Did anyone had this leak before. Its strange that started leaking right after overhaul. Btw front cover gasket wasnt replaced at overhaul, just cam cover gasket or rtv…
3406E leaking oil behind fan hub !!
