Do it when the DIC tells you to. I'll do it when the oil life gets to about 25%. That was also recommended by c4c5specialist.
The days of changing oil every 3K miles are over, ESPECIALLY when running synthetic. The DIC has a nice algorithm that takes all kinds of things in to consideration.... rpm, speed, cold starts, age...etc, etc.
The days of changing oil every 3K miles are over, ESPECIALLY when running synthetic. The DIC has a nice algorithm that takes all kinds of things in to consideration.... rpm, speed, cold starts, age...etc, etc.