Join Date: Nov 2007
Location: Humboldt County, CA
Car: 2008 OB XT Limited; 2002 Impreza 2.5TS
Feedback Score: 0 reviews
Oil Change Interval...
Yes, I've already searched and read all about it. I know exactly what Subaru Inc. says, and when they said it.
So far I've changed my oil every 3,750 miles, as ordered. I use only Subaru filters. I just switched to synthetic.
Here's the question:
Assuming that I'm using quality synthetic, why NOT extend the oil change interval?
I understand the problem with the filter in the banjo bolt, which is why Subaru originally halved the oil change interval.
Most of us have now removed the filter, so this is now a non-issue, right?
I understand that changing the oil and filter frequently is good to do to get rid of contaminants and so that the filter doesn't fill with crud, but assuming that used oil analysis says that the oil is OK, then where's the problem?
I'm considering extending my oil change interval to 5,000 miles, doing a used oil analysis, and then extending it further if the analysis is good...