What's up....

Today was the first time I put synthetic in my 240D. I even went to Wal-Mart on a mission to find all the synthetic oils. I first put 8 quarts of MOBIL 1 with red cap in the shopping cart and then as I was walking through the isle I noticed Rotella Synthetic at 12.99 per gallon. Wow is that a bargain for an oil brand that I have been using all the time. For the last 20,000 miles only Rotella regular went into the car. The grade of the oil is 5W-40 so it is perfect for those cold winter starts... If I have been changing the oil on my car religiously at 3,000 mile intervals what would be a good schedule since I have gone to synthetic ?

As I was reading the one trillion oil threads here I noticed that most will use MOBIL or DELVAC as opposed to ROTELLA. Is there something with ROTELLA that many are staying away from it ?

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Audi TT