It's no different than using heavy motor oil to quiet knocking cylinders in an engine that's ready to blow up because you really need to sell the car and a new engine 'isn't in the budget' and "the sales contract doesn't specifically say that the engine won't blow up in a week"

As with other locks mentioned, I utilize multiple sets of the lock cylinders and can re-key in about 20 seconds per lock. 

Once you get the cylinder out, it looks pretty much like a deadbolt.

Also keep in mind depending on which lock you get you may need to purchase a new cylinder (pic) and have it keyed too.

The deadbolt slid to the lock position and then when I went to unlock it the inner cylinder and the key popped out of the lock sending the lock pins flying all over.  

Not all cylinders are firing quite yet, but they are revved up. 

Was not really planing on but we rented it and just had to get one. 2015 Mustang Ecoboost 4 cylinder turbo getting 32 mpg on highway. 

It is has an old low pressure cylinder currently.

Stupid me pulled the start cable, with no spark plug in it, to find out it had fuel in the cylinder... yes I was covered in gas.

I just want people to know that the only reason all of my valuables were still in my home after I was robbed was because I had a double cylinder lock on my front door the thieves gathered all of my belongings up but they couldn't exit the front door as they expected.