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The other concern is the wear and tear from the oil not properly lubricating the engine fast enough. A few of the other mechanics I talked to said that the 20w50 on cold startups will cause damage.

Yes, I'm in Wyoming. I really do not drive very far at all, maybe 50 miles a week with the occasional trip to Colorado on the weekends. I honestly do not know if a thicker oil is needed. I have used synthetic 5w-30 forever and just now started to notice that the oil was burning a bit. The...

I took my 2010 2.5 Outback with 190k miles on it to the local guy who works on Subarus for an oil change, and when I picked the car up the sticker in the window said 20w-50. I asked if this was correct because for the last 12 years of owning my car I have only ever had 5w-30 put in. The...