I agree 100% about the warranty side of things... lifegaurd 8 AKA mopar 8&9 has a good enough record/reputation to be worry free for 100,000 km. Beside that there is the obvious "why would you mesh with something thats covered anyway". I think for most people the question becomes when my power train warranty ends (for most people 5 years... for others possibly 7 or 8) whats my best course of action? It is true that the average consumer keeps there vehicle for less time than 10 or 20 years ago. For those people is a change worth it? Probably not, I certainly wouldn't bother if I planned on getting rid of my vehicle shortly after my warranty expired. To add to the confusion you have FCA saying "lifetime" and ZF saying change at 100,000km. For me it boiled down to simply the overwhelming amount of information. Trust me when I tell you I spent ALOT of time researching this before deciding to change my fluid. The recurring theme across multiple forums from hundreds of people was they used valvoline with no problems. The sheer amount of use in these transmissions ranging from BMW sports cars, to diesel trucks towing on a daily basis. Many of testimonials having 100,000 km + since changing. Does this have something to do with the fact the valvoline is the cheapest alternative?... probably. On the other side of the fence I have yet to find a report claiming that someone switched to valvoline and ended up with a failure. HONESTLY I invite anyone to browse the forums... the reports from happy switchers HUNDREDS... the reports of unhappy switchers VERY RARE. For me this, coupled with the fact that ZF is going to be biased (for obvious reasons) toward its own product was enough. Of course there's also the fact that Valvoline, Amsoil, red line, pentosin, motul, and several others are all extremely reputable companies that no doubt employ some of the best in the business. Is it likely that ALL these companies would knowingly decieve customers and make claims without researching/testing first. They sell products based on there reputation and if there fluids start destroying trannys it doesn't help business. When you look at all these factors the only sensible conclusion is that yes valvoline can be used... there is just no (or very little) evidence to back up claims that using it is a bad idea. And a mountain of evidence that suggests using it is just fine. Now that I've written this I'm sure some people will dig hard and find a story here or there about someone using valvoline with catastrophic results. But like I said this topic is all over the web on RAM, JEEP, BMW, and several other forums with conversations dating back to 2010 for Audi,and all the way through for others. And the recurring consensus is "I use maxlife, works great.Its also all over youtube with dozens of videos from all over the world. These average Joe's have no reason to lie.