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Just ran across something while searching about oils on a Mazda3 forum for my wife's car.
By all means do the 5w-30 vs 0w-20 comparison. But do remember that mobil1 5w-30 sheers below a 20wt oil after just a few thousand miles. Its not sheer stable.
http://www.mazda3forums.com/index.php?topic=6527.0
its reply 12
So this person is stating that mobile1 5w30 is not sheer stable and will break down even lower than a 20 weight oil after a few thousand miles. Is there any truth to this?
I have been picking up the mobil1 5w30 at the local BJ's wholesale because I can get a case of 6 for ~$25. I realize that 0w40 is the best thing, but I cannot seem to find that oil anywhere in my area.
By all means do the 5w-30 vs 0w-20 comparison. But do remember that mobil1 5w-30 sheers below a 20wt oil after just a few thousand miles. Its not sheer stable.
http://www.mazda3forums.com/index.php?topic=6527.0
its reply 12
So this person is stating that mobile1 5w30 is not sheer stable and will break down even lower than a 20 weight oil after a few thousand miles. Is there any truth to this?
I have been picking up the mobil1 5w30 at the local BJ's wholesale because I can get a case of 6 for ~$25. I realize that 0w40 is the best thing, but I cannot seem to find that oil anywhere in my area.