ATF Brands - Mixing them bad or acceptable?

Discussion in 'The Bench' started by BadBrad, Dec 2, 2020.

  1. BadBrad

    BadBrad Got 4-speed?

    One of my trucks is 1800 miles away with my son. 2007 F150 with 64k miles. I installed a B&M trans pan plug so we can quickly swap out 4 quarts therein as part of fluids half-life maintenence. All 12 quarts in there are Motorcraft Mercon V. My son will take this to Midas and they'll swap in 4 quarts of Valvoline Mercon V. Do my Buick brethren think I should be at all concerned for the two different brands of ATF in the same automatic transmission?

    Gracias guys!
     
  2. Smartin

    Smartin antiqueautomotiveservice.com Staff Member

    As long as it’s the same type or compatible with said type, then go for it
     

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