What am I missing?
I purchased Loctite 567 recently because it is so highly recommended here. However, I have used Locktite 515 for years on cars, antique airplanes and my first RV. I get the teflon lubrication. Both are anerobic cure. 515 is for thin gasketing. I clock the fitting as needed without excess torque and count on the 515 to seal any thread voids. No leaks, so educate me why 515 is not another good option.
RV-3B flying w/ carb / Pmags / Catto 2b / Steam
RV-4 fastback w/ Superior XP360/AFP/G3X/CPI/Catto3b