Just the 2nd change on this engine. Son is in college and does about 700 miles a month, it would be lower but he comes home every 6 weeks or so, a 350 mile round trip. The engine is still new and there's the infamous overuse of silicon sealant with Subaru, which can contribute to the high Si numbers. Cu seems awfully high, what type of wear does that typically indicate?
All my cars should be using 0W-20 but in hot South Florida, I've been using 5W-30. I switched back to 5W-20 on this fill and will stick with it for a while to see it trends.
All my cars should be using 0W-20 but in hot South Florida, I've been using 5W-30. I switched back to 5W-20 on this fill and will stick with it for a while to see it trends.