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Bookmark or Share- Leaded vs. Unleaded Gas: What’s the Difference? - CarParts.comLeaded gasoline is regular gas with a lead additive that raises its octane level and improves its performance. Unleaded gasoline uses ethanol to raise the octane level and increase both performance and efficiency of the fuel.
- Leaded Petrol vs. Unleaded Petrol - What's the Difference ...Leaded petrol and unleaded petrol are two different types of fuel used in vehicles. Leaded petrol, also known as leaded gasoline, contains a compound called tetraethyl lead, which was added to improve engine performance and prevent knocking.
- Is Unleaded Gas the Same as Regular? - Mechanic BaseUnleaded gas is the same as regular, since leaded fuel was outlawed in the 1970s due to neurological issues. However, there are various octane levels of unleaded gas, and so some varieties are considered better quality than others.
- Types of Gasoline Explained: Learn the DifferencesRegular unleaded gas is the lowest octane fuel at typically an 87 level and is suitable for most cars. Mid-grade is the middle-range fuel at usually an 89 octane level. Premium is the...
- What Is Unleaded Gas? - Kelley Blue BookUnleaded gas is pump gasoline that contains no tetraethyl lead (TEL) additives. TEL was added to gasoline to boost its octane levels and reduce engine knock (irregular combustion).
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