I just drained Mobil 1 EM 5w30 out of a Chevy 262 V-6 after 2 years and 5000 miles. Oil in drain pan looked normal, no worse than 5000 miles on Castrol a lot quicker on another vehicle I have. I used a Wix filter and Filter Mag. The factory drain plug on this engine has a magnet in it and it was...