I'm not perfectly clear on the question. If you mean pinging and popping, that is not typical unless you have bad gas. If you mean burning up rings on the pistons, that also is not very likely. But I can tell you that running a car at or close to E is not healthy for your car. Your gas tank is similar to a coffee pot in the sense that there is debris that settles to the bottom of the gas tank. When you run off of the last bit of fuel you run all of the debris through your fuel lines and your fuel filter. You can damage and/or clog your fuel filter by doing this. The debris inside your engine shouldn't affect your engine internally significantly. BUT if your fuel filter gets clogged bad enough it can starve your engine of fuel.
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