2017 Forester XT Touring EyeSight
My engine is a 2017 FA20A (Forester XT) but this is likely just as applicable to many more Subarus. Here are photos to show just how far off dipstick readings can be, when you are not careful about wiping it off with a paper towel, and/or you do not park the car on level ground. Both these pictures were taken today in my sloping driveway, with only 60 seconds of driving between, to turn the car around, then an hour of parking to settle the oil again. My car's actual true oil level today is near the perfect "Max" upper hole on the dipstick, if I were to have parked on level ground and done a careful wipe job. My driveway slopes about 6% (3 inches over the length of a 4 ft carpenter's level). Take note how there is some chance to spot the "partly-wet" level on the dipstick without first wiping, which actually is some indication of the correct level. It varies in appearance but I can usually spot it. But I would never trust this method of interpretation to someone who wasn't a careful observer.