HINSDALE, Ill. (WBBM) — If your gas gauge is edging toward empty and you plan to jump on an Illinois toll road, you might want to gas up beforehand.

As WBBM Newsradio 780’s Bernie Tafoya reports, gas stations are shut down at four Illinois Tollway oases Wednesday – Hinsdale, Lake Forest, Belvidere and DeKalb.

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LISTEN: Newsradio 780’s Bernie Tafoya reports

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An Illinois Toll Highway Authority spokeswoman says the gas station stores that had been run by Exxon Mobil are being switched to being run by 7-11, and there is no gas service while the swap is going on.

Computer systems and signage need to be changed, and 7-11-type products are being installed. The fuel sold will remain Exxon Mobil, though.

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The changeover is supposed to go on through Thursday, so you can expect the other oases not to have gas service at some point too.