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.
Look at the link Travlingman posted for Ford approved oils to use. Shell Rotella T6 is now approved and I suspect Shell hasn't updated their website yet.
So yes you can go to Wal Mart and buy a Motorcraft filter and Shell T6 and have a very enjoyable oil change experience.
BTW... The only big oil company Ford hasn't approved is Delo since they choose to make their oil gas and diesel compatible by keeping zinc and phos. levels low. A big mistake IMO.
