Post by
Hijacker »
https://forums.nicoclub.com/hijacker-u9394.html
Tue Jun 17, 2008 6:55 am
If you leave the upper pan on, you'll develop oil leaks. The upper pan needs a total, unbroken seal to retain oil properly. The silicon will set with a crack for oil to seep through where the timing cover meets the already set oil pan/block seal.