I have 5 qts SSO left and need 6

[demarpaint]

Ok I have 5 qts SSO 0w30 from back when I used it, and 1 qt ASM 0W20. Would adding the qt of ASM to the 5 qts of SSO still keep me in the 30 grade range? I plan on using this up in my E-150 and I don't want a thick 20 grade oil in it, it was not back spec'd like most Fords to a 20 grade oil. I have in my stash as well. But keeping this mix all Amsoil would probably be best. TDT 5W40 PP 5W30 Edge 5W30 M1 0w30

 

[A_Harman]

From Widman's calculators: KV40 = 56.8 KV100 = 10.2 VI = 169 So it's still comfortably a 30-weight.

 

[demarpaint]

Originally Posted By: A_Harman

From Widman's calculators: KV40 = 56.8 KV100 = 10.2 VI = 169 So it's still comfortably a 30-weight.

Thanks is that for the old formula SSO and ASM? I couldn't find the numbers to plug in.

 

[A_Harman]

Those are based on the current numbers that are on AMSOil's website for SSO and ASM.

 

[demarpaint]

Originally Posted By: A_Harman

Those are based on the current numbers that are on AMSOil's website for SSO and ASM.

Thanks! These qts are old stock, about 4 years old. I'm thinking I still should be GTG.