It's a thread locker. It keeps the bolts from backing out. The bolts come from the factory with thread locker on them, and if you buy them from the dealer, they will have thread locker on them.
Doing my Intake and head swap (already have E cam), Putting all new exhuast, and puting 3.73s in the rear end. Need to fix the body one of these years.
I thought it was a 13mm 12 point but maby I am thinking about rangers and other fords...It very well could be 12mm. I use my 3/8 impact with a 12 point swivel impact socket and I can have the D/S out and back in within 5 minutes on a hoist. On the ground without air tools I would say about half hour at most..
so you'd actually trust spray paint to keep your driveshaft from coming off! if it was me, i'd say the $2 for some real thread locker would be a damn good investment! if those bolts come loose... ugggh- look out! good luck though! i definately would not be recommonding this approach to anyone though! jmho
Once the paint dries in the threads, it acts like loc tite. Even so, I've put my driveshaft in without loc tite and its been fine. I had loc tite but the bottle was empty so the chrome spray paint was the next best thing I had
My car had an aluminum driveshaft on it when I bought it so I have nothing to compare it to but the drivetrain on my car is very smooth, no clunking or any of those noises.