Quote:
Originally Posted by gobblerman
Guess that answers the myth of don't use synthetic till after breakin.
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Well, there's some truth to it. For example, if you JUST purchased a new trundra, you probably shouldn't change out the factory 0W-20 for ENEOS 0W-20 for at least 500-1000 miles. The reason being the ENEOS 0W-20 is of higher grade and is extremely smooth, so it will be difficult to break in the motor properly. So it's not that you shouldn't use synthetic all together, but just not very light weight synthetics to try to break in a new motor.