The fluid comes out very fast when draining and likes to splash the undercarriage. Yes, some others may be compatible, but this way you don't have to worry about anything that might void your warranty. If I remember right, the correct amount is 3.3 quarts.ĭo NOT do any kind of power flush. The proper service method is to simply drain the fluid and refill. I do this every 7,500 to 10,000 miles on our Gen 2 Odys (with each oil change). The lab that tested his Gen 3 Ody's used ATF felt that religiously doing a simple drain/refill periodically (15,000 mile minimum interval sooner would be better) was the way to go. If you want measured results, look for RinconVTR's Blackstone UOA thread. Obviously, you're not doing this.but pulling that line is extra effort to no measured results. It takes very little ATF flush pressure to do this. The problem with a true pressurized flush is it requires plugging the sump vent and forcing fluid into the sump.this will wreck the ATF sump strainer, causing it to dump its entire load of captured garbage into the pump inlet at the valve body. Our A/T's are designed to handle this pressure since it only occurs in tightly regulated areas. The standard measured internal ATF pump pressure at the various line test ports runs in the 130-140 psi range. If you have that many particulates circulating in the ATF, the A/T is probably close to failing anyways. To sum it up, pulling the line and using 8 quarts won't cut it to get you close to 90% fresh ATF, since more fluid (by design) runs through the first two ATF pump customers (and then dumps back into the sump) than the straight shot cooler fluid circuit. That's why Honda recommends a simple drain/refill regimen, since there is no proven benefit to removing that return line. In short, you still end up doing the "dilution by drain/refill numbers" method. What this means is that "dirty" fluid from the first two ATF pump "customers" will return/fall into the sump (by design) and then possibly only then run through the cooler circuit to your used fluid catch pan (or make yet another trip through the fluid power passages or TC operation passages). The Helm manual gives a good schematic of where fluid moves from that pump. Fluid from the A/T's ATF pump runs to fluid power circuits, the complex of fluid passages that govern TC operation, and the cooler circit.all three separately from the pump, not in series. If it did, then the ATF return line method you're using would be the perfect method. Fluid from the ATF pump doesn't just go to fluid circuits and then exit out that line.
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