Not your imagination: Why your propane tank actually is running out quicker than before

You no longer have to wonder why your grill is running out of gas a bit sooner than it used to.

Following the lead of ice cream makers who decided consumers would rather pay the same and get less, the propane exchanges you're getting at places including The Home Depot and Lowes are selling you less gas in your tank but are charging you the same.

What had once been 20-pound tanks (which could actually only be filled to 18 pounds) are now 15-pounders, according to the AP. The punier tanks came as a surprise to consumers who hadn't noticed the unadvertised shrinkage.