All three of my 2.6 turbo motors seem to blacken the oil rather quickly. I am running regular Valvoline in two of them and Max Life in the one with 100000 miles on it. I have heard of useing Castrol motor oil to prevent coking of the oil in the turbo. That may be what turns the oil black so quick. I sure someone will chime in with better info.

Well on my way to becoming that eccentric old man in every town.(crazy as a s#@thouse rat) With a yard full of desireable old vehicles that tells you, Sorry they're not for sale..... Someday I'm going to fix them.