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As far as the numbers, use what your vehicle manufacturer recommends. There is a reason your manufacturer recommends a viscosity, the main reason is, the engine is built a certain way and needs that viscosity. If you put a heavier weight oil in the engine than what is called for, your engine will not get the oil in a quantity it needs, nor in places it needs ...


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As the previous answer stated, always use the oil specified in the owners manual for your vehicle based on temperature. As for the numbers and what they mean, the numbers are the "viscosity" of the oil. Viscosity refers to the thickness of the oil, lower numbers are thinner, higher numbers are thicker. More appropriately the viscosity number is the amount ...


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The 93 Ford 3.8 engine utilizes Torque-to-Yield head bolts. If you didn't replace the head bolts and torque/turn them correctly, you've most likely caused the same problem over you were trying to fix. Plus, if you don't do the sequence properly, you'll have issues again. Here is the installation process for the heads: Clean the cylinder head bolt hole ...



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