blending Mobil 1 Extended Performance 15w50

[mchang204]

I picked up 23 quarts of Mobil 1 15w-50 EP at my local Target stores at 1.22 and 0.97 per qt.
How do I mixed them with other oil to make them close to 10w30? Thanks.

 

[Triple_Se7en]

48 ounces 5w-20 for every quart of 15W-50 will get you real close to 10w30.

In a 5-qt crankcase, two 15W-50 with three 5W-20.

 

[Dave Hess]

Exchange some of them at Walmart