Amsoil SS 5W30 and 0W40

[bfleeman]

This mix is 50/50. Currently running in 2005 F150 5.4 3V. If all tests well in spring, I plan on using it in my 2019 F150 3.5 Ecoboost.

 

[wpod]

What are we trying to gain?

 

[bfleeman]

Viscosity increase to the high end of 5w30.

 

[simple_gifts]

Any reason you just don't use 0w-40 SS?

I've never understood mixing for any other reason than using up left over quarts.

 

[bfleeman]

Any reason you just don't use 0w-40 SS?

I've never understood mixing for any other reason than using up left over quarts.

Given it serious thought. But haven’t made that leap yet for warranty purposes I guess. I know the 5w30 SS dropped a viscosity grade in 2000 miles because of fuel dilution of 2%.