Originally Posted By: jdmstr22
Engine is very clean and has been well maintained since new, given that the manufacture reccomends 7,500 for regular and 3,750 miles for severe service. I think i can take thos oci to 7,500 miles with complete piece of mind, just wanted a second opinion.
I've never seen the owners manual for a 06 Sonata but...You live in Chicago - every owners manual I've ever seen would qualify you for "Severe Service" on climate alone - although I suppose if you park in a heated garage at both home and work you could consider that a mittigating factor - that and if you can somehow avoid stop & go driving ...
One probably has to live along the coast in northern Washington state or southern British Columbia to have a real shot at year-round mild temperatures.
Personally I'd rather stretch the a little in the fall, then start fresh around third week of November so my oil is as new as possible during the three coldest months.