I use it sparingly on transition areas, like where the pan gasket crosses the timing cover, or down in the corners where end seals meet the gasket.
Also to seal open bolt hole threads that go through into the water jacket.
It's good for damaged areas, rust pitted, gouged, repaired, where there is not a good surface for a gasket to seal to.
If you do substitute silicone for a gasket, be sure the gasket is not used as a shim. Sometimes gaskets serve a dual purpose, sealing and shimming a bearing preload, or a gear clearance.
Paper and cork gaskets are pretty stable, but rubber gaskets will squeeze out if silicone or any wet type sealer is used, or the surface is oily.
Be sure to flatten sheet metal covers back to flush where the bolts have pulled down.
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Today's Featured Article - Box Plow Blues - by Tom Schwarz. One of the first implements most tractor owners obtain is the box plow. For very little money, this piece of equipment promises to plow and flatten any hill or vale on your ranch road or farm. At least that's what I thought! As simple as a box plow appears, it can be rather challenging to make work correctly. In our sandy soils of Florida, traction is king. You can never have wide enough tires or heavy enough weights to get all the traction you want … unless you own a monster tractor. U
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