Forum Discussion

jolooote's avatar
jolooote
Explorer
Jul 25, 2015

Ford 5 speed Tranny fluid. Mercon SP or Mercon VL ?

Hi all. My old Class'A' 2006 On the ford F53 chassis, V10, 362 HP with the 5 speed Tranny called for 'Mercon SP' Trans Fluid. My new Class'A' 2015 Thor Vegas on the Ford E-350 chassis, V10, 305 HP also with a 5 speed Tranny calls for Mercon LV. I still have some of the Mercon SP from the old RV. Can I use SP in my new one even tho it calls for LV ?
Class A

4 Replies

  • Dale_Traveling's avatar
    Dale_Traveling
    Explorer II
    Jul 26, 2015
    You can probably mix the different fluids but I would stick with what's in the transmission.
  • WILDEBILL308's avatar
    WILDEBILL308
    Explorer II
    Jul 26, 2015
    jolooote wrote:
    Hi all. My old Class'A' 2006 On the ford F53 chassis, V10, 362 HP with the 5 speed Tranny called for 'Mercon SP' Trans Fluid. My new Class'A' 2015 Thor Vegas on the Ford E-350 chassis, V10, 305 HP also with a 5 speed Tranny calls for Mercon LV. I still have some of the Mercon SP from the old RV. Can I use SP in my new one even tho it calls for LV ?

    It's your money, just how much does a new 5speed transmission cost just because you have some left over non speck fluid. I would run what Ford calls for.
    Bill
  • Pirate1's avatar
    Pirate1
    Explorer
    Jul 25, 2015
    Newer one should be LV. Older could be LV or Mercon, but I think Ford preferred LV. Just google Mercon SP VS LV, you will find more than enough confusing posts. I have been using LV in my 2006 since I owned it. There is a Ford TSB recommending it.
  • MountainAir05's avatar
    MountainAir05
    Explorer II
    Jul 25, 2015
    The way I read it NO. LV is a new improved fluid.


    http://www.irv2.com/forums/f23/mercon-sp-or-lv-fluid-64848.html

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