CrashOverride
Well-Known Member
- Joined
- Aug 18, 2018
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- Under a hood
- Vehicle(s)
- 2015 Mustang GT
I did not know this existed. Very interesting. It's almost like the OEMs are admitting their engines have nasty blowby.It is an update of oil specs to address low speed pre ignition (LSPI). The new number is the new, updated Motorcraft oil that has the API SN Plus donut on the back of the bottle. All oil manufacturers that have the new API SN Plus donut on the back of the bottle are addressing the LSPI issue and generally making a better oil. Here is a video from Motorcraft explaining it.
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