Unleaded 88 gas vs 87

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In this article you are going to learn the differences between unleaded 88 gas and unleaded 87 gas.

Unleaded 88 gas is a mixture of gasoline and ethanol with 15% ethanol and 85% gasoline.
Unleaded 87 gas is a mixture of gasoline and ethanol with 10% ethanol and 90% gasoline.

Unleaded 87 gas is also known as regular gas, it represents (97%) of all gasoline sold in U.S.

Table of Contents

Is 88 gas the same as 87?

No, Unleaded 88 gas is not the same as Unleaded 87. Unleaded 88 has a higher ethanol content (15%) compared to Unleaded 87 (10%), resulting in a higher octane rating of 88. The increase in ethanol contributes to the higher octane level.

Differences between unleaded 88 and 87

No	Unleaded 88	Unleaded 87 (regular gas)
1	Contains 15% ethanol, Unleaded is also called E15 because it contains 15% ethanol	Contains 10% ethanol, Unleaded 88 is also called E10 because it contains 10% ethanol.
2	Contains 85% gasoline	Contains 90% gasoline
3	Contains 50% more ethanol than unleaded 87	Contains 50% less ethanol than unleaded 88
4	Has a slightly low energy density as compared to unleaded 87	Has a slightly higher energy density as compared to unleaded 88
5	Octane rating is 88. Has Octane rating slightly higher than unleaded 87	Octane rating is 87 Has octane rating slightly lower than unleaded 88
6	Can only be used in all 2001 and newer cars, trucks and SUVs. This was approved by the U.S. Environmental Protection Agency (EPA)	Can be used in all old and newer cars, trucks and SUVs. It can be used in vehicles manufactured before 2001.
7	Unleaded 88 cannot be used for non-automotive. Non-automotive uses were not approved by EPA because many non-automotive engines do not have the sophisticated computer controls to adjust for fuel variations.	Can be used for both automotive and non-automotive uses