I've used the PAO/full synthetic Amsoil signature series multi rated ATF on every Chrysler tranny I've had except the RE series - ATF+4 eliminated the shudder on those.
Based on that, Amsoil ATF, even though it has a +4 rating, must be closer to Dex properties.
My tranny builder suggests Dex + Lubegard in his new tranny when I install it, but I see some pretty brutal winter temps - this for my non lockup '91.5 diesel A518/46RH.
Not sure if it's applicable, but a couple other tranny builders say Amsoil is fine, and they use the same Raybestos High Energy/Borg clutches.
Could the valve bodies be valved so differently between builders?
I have a choice of Amsoil Signature ATF, Mopar ATF+4, or perhaps the Schaeffer equivalent (204?), and of course Dex3 + Lubegard.
High temp protection is good, of course, but which of the above will have the best shift/feel during extreme cold weather?
Based on that, Amsoil ATF, even though it has a +4 rating, must be closer to Dex properties.
My tranny builder suggests Dex + Lubegard in his new tranny when I install it, but I see some pretty brutal winter temps - this for my non lockup '91.5 diesel A518/46RH.
Not sure if it's applicable, but a couple other tranny builders say Amsoil is fine, and they use the same Raybestos High Energy/Borg clutches.
Could the valve bodies be valved so differently between builders?
I have a choice of Amsoil Signature ATF, Mopar ATF+4, or perhaps the Schaeffer equivalent (204?), and of course Dex3 + Lubegard.
High temp protection is good, of course, but which of the above will have the best shift/feel during extreme cold weather?