mreed2483 wrote:As long as the fluid you're using meets or exceeds the requirements of specified for your vehicle it will not affect your warranty.It can not be held against you so long as you follow the regularly scheduled maintenance plan and can provide proof that the maintenance was kept up. You can always call the dealership and ask either parts or a service tech about it or even call the number for your warranty if you have it and ask them. If it requires Mercon V and you use a lesser grade then it would affect you, but if you use Mercon V and it requires a lesser grade it will not affect you because Mercon V is backward compatible and supersedes regular Mercon standards. This is the same for any type of lubricant, coolant and what have you. Use the required or greater and you'll be fine.
Good article about Mercon LV.
Mercon LV and Mercon V are not interchangeable is correct and true statement. The dealership can not void your warranty because you did not use "Ford" Mercon LV unless they can prove the fluid you used directly caused the problem should a problem arise. Please refer to the Magnuson-Moss Warranty Act. As long as the fluid you use is equal to or better than the required fluid than you can use that fluid. By this I mean that if you use ATF made by Oil Maker ABC and said ATF is Mercon LV compatible or Mercon LV equivalent than you can use that fluid without fear of voiding warranty. The fluid you use must meet Mercon LV standards. For example: AmsOil makes Synthetic Fuel Efficient Automatic Transmission Fluid (ATL) which is " recommended for automatic transmissions and other applications requiring DEXRON® VI, MERCON® LV, SP or Toyota WS."
If you look at Mercon LV (Ford) specs: http://www.fcsdchemicalsandlubricants.c ... N%20LV.pdf
versus AmsOil ATL specs (at bottom of page): http://www.amsoil.com/storefront/atl.aspx
you will see that they are very similar. Again as long as it is the right TYPE of fluid it doesn't matter the brand. This is not exclusive to motor oil. If you use Mercon V or equivalent made by AmsOil, Valvoline, Mobile 1, etc. your warranty can and will be voided due to failure to use the appropriate fluid if your vehicle requires Mercon LV.
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