Unit: 2001 Honda Civic LX, MT; 41,500 miles on unit
Oil: Castrol GTX 5W-20; 5,011 miles on oil.
Make-up oil: 0.0
Oil Filter: Honda OEM, Made in Canada, so, I guess, it's Honeywell aka FRAM.
Air Filter: Honda OEM, replaced @ 30K
Driving conditions: 70Hwy/30City, MN hot humid summer - beginning of...