<ul><li>Using racing oil in a street car's engine is not advisable due to different formulations and additives tailored for specific applications.</li><li>Although racing oil like Valvoline's VR-1 may have superior properties, it lacks the necessary antioxidants for extended use in street cars.</li><li>Street car oils contain more stabilizing additives, allowing for longer oil change intervals compared to racing oils.</li><li>Leaving racing oil in a street car for 10,000 miles can lead to increased engine wear despite the oil quality, similar to how racing tires wear quicker than street tires.</li></ul>

Here's Why You Shouldn't Use Racing Oil in Your Street Car's Engine

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