The whole point in using penetrants WITH a torch is to save the HASSLE of broken bolts. For goodness sakes, if the nuts are rusted, REPLACE THEM! If the studs are rusted, REPLACE THEM! Use stainless steel studs and nuts like the other gentleman said as well as the anti-seize compound. A little tapping to loosen the rust with the penetrant is a great idea, especialy if there is room for someone to tap while you are turning. Heating the whole area and cooling the bolt or stud in also excelent. I hate to sound like a pessimest earlier, but variety is the key. Using several tecniques to solve any problem is better than one. The more tecniques in your arsenal, the more heartache you will save yourself. -Mike ----- Original Message ----- From: "jtrealtywebspannet" <jtrealty@xxxx> To: <dmcnews@xxxxxxxxxxxxxxx> Sent: Saturday, May 11, 2002 11:11 PM Subject: [DML] Re: Exhaust manifolds removal? > With all of my experience working on exhaust systems and parts the > best advice I can offer is that the most success I have had is not > with any liquids or sprays. [moderator snipped...]