The crayons are called tempil sticks and they are designed to melt at very specific temperatures. Here is a source: http://www.centaurforge.com/index.html click on blacksmith tools, then tempil sticks. These are common and should be available at any welding supply store. I recall they are generally designed for use at higher temperatures (greater than 300 F, or so). If you hit the website, take a side trip to the letter and pictures from the owner, now on duty in Iraq. I've never even heard of the business before, Google just coughed it up. A metal heat shield may be needed to protect the brake line and master cylinder, but it would appear something is running extra hot. Try viewing the exhaust manifolds in total darkness right after a hard run. You might see the hot spots glowing red. C-300'ly, Rich Barber Brentwood, CA (106 tomorrow) 1955 C-300 James McMullan wrote: >There is a product called ( temp sticks) .Its a set of crayons designed to check temperers in deferent locations.You can check lines,master cylinder ,area around things like fire wall ect.See your local speed shop or do a computer search.Mine is to slow.Jim McMullan 300 F > > >James McMullan >macthehammer@xxxxxxxxxxxxx > > > To send a message to this group, send an email to: Chrysler300@xxxxxxxxxxxxxxx For list server instructions, go to http://www.chrysler300club.com/yahoolist/inst.htm Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Chrysler300/ <*> To unsubscribe from this group, send an email to: Chrysler300-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/