When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
No reason to use loctite. The nuts wont actually back off or anything. What may happen is that the head gasket compresses to a point, loosening the clamping effect of the studs Or, the studs stretch, which would also serve to lessen the clamping effect, of course.