Contact the company and see what they say. I think you're SOL though.
I had a transmission failure while using a popular synthetic oil that "claimed" you can use their ATF for 50K miles under severe duty. At 48K the transmission puked, needle bearing failure, so I sent a sample of ATF off to Blackstone Labs to have them test the ATF, and their tests showed the ATF had been over run and should have been replaced long ago. I sent Blackstone's findings along with a complete claim form for $4K the the popular synthetic oil manufacturer, and they requested a sample of the ATF. I sent in a sample of the ATF and "their" lab (owned by the same popular synthetic oil manufacturer) said the ATF was still fine for continued use, claim denied............. (Aunt had the same popular synthetic oil manufacturers oil in her car, it was rattlin', told her it sounded low on oil, she said "it's good for 30K", then I added 3+ quarts of oil to her car

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To the point, they are either going to easily warranty the claim and work with you, or it's going to be a battle and cost more to sue them, than to repair it yourself. I think some companies count on this, and the warranty is only as good as the company that stands behind it....