I have a 2000 Excursion with a 7.3L PSD. I bought it at 140k and I have no idea of the maintenance history, but it was bone stock except for a drop-in K&N (which is long gone). Earlier this year I replaced all the O-rings and HPOP hoses, replaced the turbo with a Garrett 38R, and put a set of 160/80 injectors in. I've always used Rotella T6 5w-40 in it and Blackstone says my engine is in great shape.
I'm familiar with most of the saga over Ford and CK-4 oil, but from what I've read (and also a little common sense thrown in) I really don't think the issue affects older diesels like mine. I should have no problem running CK-4 going forward, right?
Here is my main question: At what temperature (EGT-wise) is it safe to shut down the engine? I've been told 400 is the maximum, but I also think that the information is probably quite a bit dated and based on older oil like CI-4 or even CH-4, both of which were more susceptible to coking. So the question is, with modern oil, do I need to let the turbo cool down some before I shut it down?
Thanks for any input.
I'm familiar with most of the saga over Ford and CK-4 oil, but from what I've read (and also a little common sense thrown in) I really don't think the issue affects older diesels like mine. I should have no problem running CK-4 going forward, right?
Here is my main question: At what temperature (EGT-wise) is it safe to shut down the engine? I've been told 400 is the maximum, but I also think that the information is probably quite a bit dated and based on older oil like CI-4 or even CH-4, both of which were more susceptible to coking. So the question is, with modern oil, do I need to let the turbo cool down some before I shut it down?
Thanks for any input.