Hey, be nice guys,,, There are different types of rubber and some do last longer than others Most will start to break down after 5-6 years but some will last a lot longer If not exposed to the sun...
You will not need to drill a drain hole as you can put a tee off of your outlet hose. so you will only need the inlet, outlet, and probe holes...
The probes do use rubber gaskets so I would check them every few years.. They are only a couple of dollars each so to replace one isn't to big a deal.....
May you have at least one sunny day, and a soft chair to sit in..
2008 5.7 L V8 Sequoia
AIR # 31243
WBCCI # 6987
FOUR CORNERS UNIT