Deep dive into oil

[Gunslinger55]

In guessing 5-50 is but the 10-50 race oil maybe not. That’s for euro exotics and such should be fine wait for the confirmation but the website is pretty informative

 

[flyhalf]

The HP-X yes. It is made also for catalytic converters

 

[TheTed]

I've been running 5W-30 in mine so far but have been following Ford's recommendation an oil change after 4 hours of track time. With something around 12 hours of track use on the car and around 6k miles total, it's been fine so far. The oil comes out looking used, but not looking that bad. The track notes for the car don't say to change the using 5W-50, but since a thicker oil would likely hurt the fuel economy numbers to some degree, that probably ties their hands, but if you buy the Ford Performance Supercharger it then says to switch to 5W-50.

Looking at the DH-R manual recently I did note that it specified 5W-50, and that has me thinking that I may switch to that next change. My question is whether they did anything different engine wise, or if it really is the same as a standard Dark Horse engine.

And, should go without saying, full synthetic regardless.