theoldwizard1 wrote:
TxGearhead wrote:
10-30 may be approved, but my 2014 F350 diesel owners manual said to use 5w-40 for severe duty, which was defined as towing.
Motorcraft SAE 5W-40 Full Synthetic Diesel Motor Oil
You are NOT going to find this at your local Walmart !
TxGearhead wrote:
Might go to T6 5w-40 in the 2018.
According to Shell this does not meet the Ford WSS-M2C171-F1 specification.
I don't know where you would buy 5w-40 Motorcraft. My dealer didn't have any. I got the deer in the headlights look when I told them they might should read a Ford manual.
No worries now though, I progressed to a Cummins.
