William:

Loctite Freeze & Release has worked very well for me in the past on the
most godawful rusted bolts on my bus (i.e., ones on the exhaust system):

<http://www.henkelna.com/industrial/loctite-freeze-release-7008.htm>

About $10 a can.

Best,
d.

On 5/22/12 4:24 PM, Automatic digest processor wrote:
> Date:    Tue, 22 May 2012 12:09:36 -0400
> From:    pickle vanagon <greenvanagon@GMAIL.COM>
> Subject: Re: seized bolts
>
> A lot of heat.
>
> I use heat every time I remove these bolts on the first try.
>
> The attachment doesn't come through on the list you need to post the photo
> somewhere and give a link.
>
> Used thermostat housings can be pricey because this problem is so common.
> If you are sick of trying things you should be able to take it to a machine
> shop and get them to remove them for you, it should be cheaper than a used
> housing I think.
>
>
> When reassembling, use a torque wrench and pay attention to the torque
> setting for these bolts.  It is very small.