Be sure that the person giving that advice is never allowed to work on your van. The Vanagon cooling system is massive considering the small size of the engine. Any bypass from the radiator in cold weather seriously takes away from the engines’ ability to warm up. There already is a bypass bleed valve there for service only. Having the tstat close completely is so important there is a rubber seal on the top disc. If you have an overheating problem destroying the tstat is not a fix.

Sent from Outlook Mail<http://go.microsoft.com/fwlink/?LinkId=550987> for Windows 10 phone

From: Dan N<mailto:dn92610@GMAIL.COM>
Sent: Sunday, January 31, 2016 1:02 PM
To: vanagon@GERRY.VANAGON.COM<mailto:vanagon@GERRY.VANAGON.COM>
Subject: Drilling a hole on thermostat?

hi all,

someone told me to drill an 1/8" hole on a new thermostat. The original one
doesn't have it. Is there any benefit (or problem) by doing this?

please help

thanks

dan