I took my car in today for some maintenance, and I asked my mechanic to clean out my egr valve and intake explaining to him about the whole bhg issue these cars can run into. The mechanic claims he used to own a legend and the owner of the shop is the most honest guy I know in the business in the area. He assured me that whatever oil was clogged in the valve it would be flushed out by him simply flushing my intake with some throttle body cleaner. Is there a chance that egr valve could still be clogged up? I only have 92,000 miles on my legend as well.