Yes, saw this on the net in the past but thought not necessary with the rubber gaskets/washers, and even with frequent checks, but now I’m a believer. Also, I may change my baffle seal to your silicon that I have had for some time. Thanks, Bryan.
I had a thread on Sonexbuilders regarding things I’ve had to safety. I’ve found some of the pictures.
Wheel pant axle bolts:
Oil sump:
Oil cooler bolts:
Also landing gear fairing pins, pressure sender, definitely the air filter, and probably a couple more things.
yep, loosing parts isnt a thing anyone would want! I agree, safty anything you can. along with the rocker box bolts, consider exhaust bolts, intake manifold bolts, and, the hose clamps! and consider heat shielding for the oil lines too! just IMHO!!
A dynamic propeller balance may also help in reduction of bolt /screw loosening vibration. 
Seems like the wrong solution to me.
Its not the solution its part of any aircraft vibration management.