I was looking thru my owners manual and noticed on pages 150 & 151 they talk about the gasoline requirements. They say if you live in the northeast your vehicle may have been designed to meet california low emission standards with cleaner burning gasoline reformulated with low sulfar and if such fuels are not available the car will operate satisfactorily but emission control system performance may be adversely affected. I do live in the northeast and have noticed under heavy acceleration I do get a sulfar smell. Can anyone tell me how I can find out which gasoline is low in sulfar so I can try a different brand. Iam using Sunoco with 91 Octane now. Thanks for any suggestions.