I did a little research on what is recommended to seal the cylinder head cover.
Here is a link to the Permatex catalog:
http://www.permatex.com/documents/AAM%20Catalog.PX0078E.pdfIf you go to page 72 (71 of 80), you'll see the cross reference for Suzuki Bond 1216 (recommended for this job in the Suzuki FSM). It says that
Permatex Ultra Grey (not to be confused with the Permatex MotoSeal® 1 Ultimate Gasket Maker Grey) is the recommended stuff to use for this job. I'll be using it this time.
Regarding the rubber cap that goes on the top of the head, Suzuki does not call for a sealant here. However, just about everyone here uses a sealant of some type on the plug. I used Permatex Ultra Copper the last time I did this job, but the plug started leaking after about 5000 miles. Note that this was with the old-style plug.
I've touted the Ultra Copper here in the past, but it's time to try something else.
I'll be putting in a new-style plug this time, and am going to try this stuff:
Permatex® Ultra Rubber Gasket Sealant & DressingI think it will also be good for sealing the camshaft end cap and even the o-rings on the valve inspection caps.
I'll let you guys know how everything works out.
I now open the floor for comments.