To be honest, if any average person were actually to give that as their reason, I’d pause, shake their hand and commend them on being a responsible car owner. Because that guy read his owners manual. “You know what fluids your owner’s manual lists as approved, sir? And you actually care? You get a gold star. Please tell all your friends to do the same.” I mean, if it’s a choice of that guy or every other average Joe/Jane, whose car would you rather be dealing with regularly? (Assuming you’re not making a profit off the guy, of course. Or maybe depending on your business model/ethics, even if you are.) It’s that guy or, “naw, I don’t really remember last time I changed my oil, maybe like a year ago give or take?” “The oil I bought said good for 10,000 miles on it when I bought it at Autozone with that free STP filter they bundled with it, I’m sure it still has a while.” “What do you mean, I have to change my brake fluid? How was I supposed to know THAT?” “Yeah, I change my oil every 3000 miles on my 2016 Corolla; that’s what you’re supposed to do, right? I’m sure of it; everyone knew that was the right interval back when I learned to drive on my dad’s 1978 Skylark.” Considering all the random derp that’s out there about vehicles, I’m okay with cheering on the few that actually RTFM. At least they’re trying!
The really funny thing is, I only skimmed through the thread the first time, and when you guys started talking about fluid and @TLAR asked what the pricing was on “your Toyo site,” my first thought was, “when did Denso start selling ATF, let alone via e-commerce ?” I was really confused for a solid 5 minutes there, and then felt sorta dumb. So maybe there is such a thing as being too used to OEM parts…