I went thru that same BS with the dealers service manager. He claimed the severe usage condition covered me because I live in an area where road salts & chemicals are used, and I must get 3000 mile or 3 month oil changes.
When I bought my 2014 Sonata, they threw in the "Forever Warranty" that extends the manuf. full engine & drive train warranty for as long as I own it, so I called their company and they said this question has come up a lot in the past, and it's been tested in court, and the "SEVERE USAGE" conditions are too vague, and all they expect you to do is follow the MINIMUM schedule as listed in your owners manual. Their policy is to ignore the "severe usage" conditions.
NONE of those conditions apply to me, and I see no need to follow the "severe usage" schedule because of road salt or chemicals, because I never intend to drive the Sonata in snow or icy conditions anyway. I have other vehicles for severe road conditions. If it ever became a legal issue, I would challenge Hyundai to provide proof and evidence that road chemicals damaged ny engine because I didn't change my oil often enough.
I was thinking about having some fun with that service manager next time I go for service. I would like to ask him if he would be kind enough to offer some of his professional advice on video camera for others to learn from on YouTube. If he agrees to do it, I'll start the video and ask him to explain to us unknowing car owners how operating a vehicle on salty roads for 2 or 3 weeks a year (which is what most of us experience throughout an average Missouri winter) should require us to get oil changes every 3000 miles or 3 months ALL YEAR long. Also please explain exactly how these chemicals get into a sealed engine in large enough quantity so as to lessen the normal life of the oil or filter?
I'm pretty sure that video won't make it to YouTube. >
