Well, the ever changing fuel in the oil number changed again. Only this time it was a good change. I changed my driving habits to include more freeway miles. Instead of taking the shortest way to work (which was about 13 freeway miles) I took a longer route (about 20 miles). I think going the shorter route never let the engine fully warm up. I my option, not fully warming the engine is considered server duty and the oil should be changed sooner then the manufacture's recommendations.
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