Both 15w40. On the one hand we have Kendall Super-D XA 15w40. Below is the link to the UOA from PQIA http:/
Next we have Motorcraft 15w40 Diesel Super Duty Formula. Also is the UOA from PQIA.
http:/ pqiadata.org/ Kendall_SuperD_XA_15W40.html /
The reason for my question is the Motorcraft is marketed as "not for use in gasoline engines with catalysts", while the other claims it's perfectly fine (or at the very least, doesn't say it's NOT recommended).
Is it because of the additional Magnesium (almost twice of that in the Kendall oil?
The vehicle in question is the BMW in my sig. I'd like to run a conventional that has more anti-wear additives, similar to what was offered in oils when it was new.
Currently I'm running Rotella T4, but the additive package in the Motorcraft looks much more robust.
My car has a cat from new that I'd like to retain as stock as these cars are appreciating in value. I also like a quiet car.
I presume since my car does not burn any noticeable amount of oil, that I should be ok.
thanks in advance pqiadata.org/ Motorcraft_15W40.html