Salam everyone, i recently bought a used civic 1999 manual transmission, got the oil changed, came out black but not sludgy, just very dark, added some helix hx3 20w50 and about a week later im seeing black droplets on the end of my dipstick, the oil above the first hole is clear gold, the oil at the tip is black and thick, is this leftover oil from the previous oil? will it clear out if i change the oil a few times? any advice from Xulfiqar bhai is appreciated, i sincerely hope i dont need an engine rebuild or something since there is no smoke coming out the exhaust of any color.