My '08 Elantra has ~27000 miles and I recently stopped by a local dealership near my residence in Folsom,Ca. to ask if there has been any manufacturer’s fix for making it easier to check and add air to tires with low pressure detection system. The answer was no and during the conversation I mentioned a rather noticeable hesitation when accelerating from a stopped position. The car was purchased new in Texas,moved to Pennsylvania for 16 months and now lives in California as I have stated above. The service advisor said Hyundai recommends adding a fuel additive every 15000 miles,at least here in California, due to the detergents etc. in California gas. I only use 87 octane and never anything over a 10% ethanol content if the pump display is to be believed.
Any thoughts on whether the additive is in fact needed are appreciated.