Quote:
Originally Posted by MacCool
I figure that the manufacturer, who is also on the hook for warranty claims, knows better. You're correct. I follow the recommendations in the manual. I see no reason to try to second guess Nissan, no matter how dirty the oil "looks".
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It's impossible to judge lubricants by any of our senses. I've seen good looking/feeling lubes test bad and vice versa.
Yes, manufacturer recommendations for specs and change intervals are usually good enough to get a vehicle past the warranty period. But they aren't gospel and they aren't the best plan if you like mechanical things and want to treat them right - especially if you like to run them hard.
You can't change lubes too often (after break-in). The worst you are going to do is waste a little money and you might end up saving a critical part. When in doubt, change it.