Best lubrication - seized manifold bolts

[ORIGLS6]

I recall the candle method from years ago but I've forgotten the procedure. Heat the surrounding area for expansion from the bolt, then hold a candle or stick of paraffin next to the bolt? Kinda like sweating copper pipe? [img]<<GRAEMLIN_URL>>/dunno.gif[/img]

Seems like the list you're asking about included Kroil near the top but like Rusty says their &quot;Best Method&quot; was acetone and ATF. Also (again, going on an old guys memory) they put good old Liquid Wrench near the top, especially considering cost/oz.

[ORIGLS6]

Found something on the H.A.M.B. Is this what you were looking for Sam?

&quot;I was reading a copy of Machinists Workshop magazine and they did a comparison test of several products used to loosen stubborn, rusted lock fasteners. They arranged a test of all the popular penetrants with the control being the torque required to remove the nut from a bolt in a rusted environment. This is what they found.

Penetrating oil used Torque to remove nut
None 516 pounds
WD-40 238 pounds
PB Blaster 214 pounds
Liquid Wrench 127 pounds
Kano Kroil 106 Pounds
ATF-Acetone Mix 53 Pounds

The ATF-Acetone mix as you know is a home brew mixed 50-50.&quot;