Quote:
Originally Posted by davidyan
The Castrol synthetic blend will be fine for your car. However, it doesn't have the Ester that is in the Nissan oil. People call the Nissan Ester oil a "blend" because it is dino base oil with esters. Esters typically don't come in motor oils (even synthetics) except in the most expensive of them all (Redline, Motul, to name a few). So, if you were using the Castrol syntec blend to get the Esters, its unlikely that you did. You might have gotten some of the PAO additives.
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Nope, didn't get the Castrol for the esters - I figured 3/4 of a quart to top off the factor fill wasn't going to dilute the factory fill to make any real difference.
And, IMHO, the "ester" thing is a little overblown - I switched to Amsoil at about 2900 miles and my engine runs quiet and smooth.