Dennis, thank you for this tip. I have been fighting a cold-running WBX for
a while now. Even an NOS VW thermostat did not curing the issue, but this
Mahle thermostat did. Now I have full heat...as it should be.

Thank you!
Christopher
T3 Technique

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
Dennis Haynes
Sent: Thursday, January 4, 2018 11:53 AM
To: vanagon@GERRY.VANAGON.COM
Subject: Thermostats especially in colder weather

Thermostat operation is a bit more complicated than it appears. The Vanagon
system makes its operation critical as it really is a mixing valve set up
and in colder weather with all of that reserve cooling capacity the response
time also becomes an issue. After OEM t-stats became no longer available I
found that many just don't respond consistently. Hard enough even finding
ones that are correct. The Meyle brand was disappointing. I have been using
Whaler for a long time. On this last rip down to Florida the Whaler let me
down. I just installed a Mahle TX 24 87D. First road test, WOW! Granted it
is now ~50 here and sunny. Up to temp, gauge needle dead center in ~3 miles.
I will be stocking these. And man the heat works again.
You can get them here.
https://www.amazon.com/gp/product/B00D3DH4J6/ref=oh_aui_detailpage_o01_s00?i
e=UTF8&psc=1

Dennis