So I have a 2018 Endeavour (aka the Everest in Australia, basically a Ranger with a 7 seater SUV body) with a 6R80 transmission (ZF + Ford joint dev right?)
Usage conditions - 60% highway and 40% city (bumper to bumper in Indian tropical conditions) traffic.
Changed the original transmission oil at around 60k miles to a liqui moly "universal" ATF that claimed compatibility with Mercon LV and a laundry list of other european, japanese and american standards that it claims the fluid is "recommended" for.
https://www.liqui-moly.com/en/top-tec-atf-1800-p000243.html
Drained as much of it as I could with a pan drop on a warm engine (a bit more than 6 quarts) and refilled with OE mercon LV from a ford parts store. There was very minor debris on the transmission filter so I cleaned the old filter and reinstalled it.
Now, again something like 25k miles down the line and the same thing is cropping up. I take it this claim of being one size fits all isn't quite accurate and the liqui moly is somewhat too thin for the 6R80. So I've got another 10 quarts of Ford OE mercon LV.
Just do another pan drop, drain and refill, so that more of the really old (factory fill fluid) and maybe not as suitable old (Liqui Moly) drains out, or do I do stuff like disconnecting the transmission cooler lines and draining at least a quart more of old oil out besides the 6+ quarts from a pan drop? I'm getting a new ATF filter this time around.
By the way, I of course refilled the transfer case as well, first with the liqui moly and then with the ford OE.
Usage conditions - 60% highway and 40% city (bumper to bumper in Indian tropical conditions) traffic.
Changed the original transmission oil at around 60k miles to a liqui moly "universal" ATF that claimed compatibility with Mercon LV and a laundry list of other european, japanese and american standards that it claims the fluid is "recommended" for.
https://www.liqui-moly.com/en/top-tec-atf-1800-p000243.html
Now, barely 20k miles down the line, I started to get slippage in the transmission, slight jerks when shifting in low gears and such.
Drained as much of it as I could with a pan drop on a warm engine (a bit more than 6 quarts) and refilled with OE mercon LV from a ford parts store. There was very minor debris on the transmission filter so I cleaned the old filter and reinstalled it.
Now, again something like 25k miles down the line and the same thing is cropping up. I take it this claim of being one size fits all isn't quite accurate and the liqui moly is somewhat too thin for the 6R80. So I've got another 10 quarts of Ford OE mercon LV.
Just do another pan drop, drain and refill, so that more of the really old (factory fill fluid) and maybe not as suitable old (Liqui Moly) drains out, or do I do stuff like disconnecting the transmission cooler lines and draining at least a quart more of old oil out besides the 6+ quarts from a pan drop? I'm getting a new ATF filter this time around.
By the way, I of course refilled the transfer case as well, first with the liqui moly and then with the ford OE.
