RE: Muffler Loctite
I have an engineering book that says 3 times the diameter of the bolt !
Regular red is 350
High Temp is 450
Silicone is 450
The "high temp" will work only on nitro two strokes. On a four stroke nitro I melted alumiweld stuff that is 730 deg. I doubt any of the above will work on Gas either - but no experience.