My 2000 Sienna with 92K miles has valve cover gasket oil leaks. Both gaskets have a slight leak with the front one being worse. The dealer wants $690 to fix it. I am not going to pay that price for it.
Are there different oils or additives I should use to minimize the leak? It isn't bad enough to show on the ground yet.
Currently I use Valvoline 5W-30 oil every 3000 miles.