Oil change question for Coyote

[RedSN]

Ford oil spec for Coyotes is either 5W20 for the regular engines, or 5W50 synthetic for the Boss 302

I'm a little curious how they get a 50 viscosity oil to behave like a 5 at colder temps? That's a huge swing.

[ZR]

IMHO, it's a 5wt oil no matter the temps or what they claim.

[TheMustangShow]

I now get about 2 tablespoons of oil in the separator per 1500km... (approximately). Oil smells bad to me too, like when an engine has been flooded or something. Must be the cheap Ford oil from the dealership.

Nothing wrong with Motorcraft Oil.

[Parkway Ford Lincoln SVT]

I'm a little curious how they get a 50 viscosity oil to behave like a 5 at colder temps? That's a huge swing.

Synthetic oils can be made to behave that way, typically mineral based oils cannot have such a wide viscosity range.

[Toxix]

Amosil recently released 5w-50. Will be making the switch to that immediately.

[allicedout]

I'll be interested to hear your results. In the 3v, less consumption + reduced cold start up smoke + reduced oil in the separator.

Keeping track of that Rick..... I know in my 05 going to 10w30 reduced start up smoke almost instantly, that's why I plan to make the move to 10w30 in the 2011 as well.