# Which Gas to Buy **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** acura, tsx\ **Created:** [March 7, 2011, 12:12pm UTC](https://community.cartalk.com/t/which-gas-to-buy/62336 "2011-03-07T12:12:30Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![bkmehlman](https://avatars.discourse-cdn.com/v4/letter/b/54ee81/32.png) [@bkmehlman](https://community.cartalk.com/u/bkmehlman)\ **Post date:** [March 7, 2011, 12:12pm UTC](https://community.cartalk.com/t/which-gas-to-buy/62336/1 "2011-03-07T12:12:30Z")
I have a 2010 Acura TSX. The manual says the car need 91 octane but the pumps only offer 87, 89 or 93. Should I buy half 89 and half 93? Would buying 89 hurt my car? Is 93 going to be too much? ---
**Author:** ![mcparadise](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/mcparadise/32/32_2.png) [@mcparadise](https://community.cartalk.com/u/mcparadise)\ **Post date:** [March 7, 2011, 12:44pm UTC](https://community.cartalk.com/t/which-gas-to-buy/62336/2 "2011-03-07T12:44:30Z")
Use the 93 or find another brand of gas that sells 91. Using octane lower than the specified 91 can cause long-term damage to the engine. 91 should be considered the “minimum” octane. Higher won’t hurt anything, but is not necessary. ---
**Author:** ![andrew\_j](https://avatars.discourse-cdn.com/v4/letter/a/91b2a8/32.png) [@andrew\_j](https://community.cartalk.com/u/andrew_j)\ **Post date:** [March 7, 2011, 2:37pm UTC](https://community.cartalk.com/t/which-gas-to-buy/62336/3 "2011-03-07T14:37:53Z")
91 is the minimum octane so 92/93 is fine. I occasionally blend 89 with my tanks when I know I have at least half 93 octane. Its fine and my engine (high strung turbo) needs higher octane far more than a TSX.