I always use what's ever handy (Silicone-RTV blue,Hi-temp red,and oem gaskets) and never had a leak.

But I always scrape both surfaces with a razor blade paying attention to the build up around the studs and I ALWAYS clean both surfaces with carb cleaner.

Also just before putting in place watch for oil dripping down the lowest (6 'oclock position) of the 3rd memeber and the housing for drips of oil which can contaminate your preped surfaces.

Good Luck !



http://www.youtube.com/watch?v=7WeACvm5X9I