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.
Try tightening the valve cover bolts evenly.
There are no additives or oils that I am aware of that are effective in
reducing or eliminating the leak. I am not a fan of stop leak products
unless the vehicle is on its last leg because they have a tendency to clog
things if air gets into the system.
Here's an example:
A 10-32 bolt in tension gets tightened to 40 lbs/sq in.
That's not as tight as possible plus an extra half turn. It's more
like snug plus another turn. However we use nuts with nylon inserts or
helicoil nuts where there is now way to use a nut.
Keeerist!...you 'did' see the smiley face on there didn't
you?!!...IT'S A JOKE PEOPLE!!
How the HELL does one tighten a bolt 'as tight as possible' PLUS
Gee golly guys, it was a newfie joke!!...
Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here.
All logos and trade names are the property of their respective owners.