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DenLorsTools.com Summary: Since 2005 at DenLorsTools.com and now our most recent tool website, WiseAutoTools.com, we’ve been answering questions on Ford spark plug thread repair kits. It always amazes us that there’s always new questions. A recent inquiry was regarding a 1998 Lincoln Navigator blown spark plug. I recommended the 5553 thread repair kit for the job. The Lincoln Navigator owner would prefer to use the less expensive Calvan 38900 kit and questioned why I made the recommendation that I did. Below is a copy of our correspondence.

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DenLorsTools.com Summary: Automotive repair blog and video comparing two Miller specialty tools. We have had a lot of questions regarding the Miller 8387 Valve Spring Compressor and the 8516A Rocker Arm Remover/Installation Tools. Both look similar and are for use on Dodge and Jeep 3.7 and 4.7 liter engines. These motors are commonly used in Jeep Liberty, Dodge Durango, Dodge Dakota, Jeep Grand Cherokee etc. *Note – The 8516 has been updated and the newest number has an “A” on the end now making it 8516A. Each tool is for a different job. The valve spring tool allows access at the valve keeper so a magnet can be used to remove it. The 8516A does not have the opening to allow access to the valve keeper.

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The Rigid brand video inspection scope is called the SeeSnake 

Fiber optic borescopes have been a great tool for auto techs, locksmiths, plumbers and electricians for years. Until recently there hasn’t been many options for a video based borescope that is affordable. Not too many auto technicians or electricians that want to spend five to ten thousand dollars for a fancy video based borescope. There are basically two options for a low priced video scope that can be used for a variety of purposes, the Rigid See Snake and the Visual Optics Video Stik.

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