TES-668 where I use TES-295?, GM 4LxxE

[redhat]

Feller near me on the marketplace is selling 3 gallons of Castrol TranSynd TES-668 for a very reasonable price. Was thinking on picking them up for my GM vehicles. I am a big fan of the TES-295, been running Delvac 1 ATF in my Tahoe's 4L60E for a while now.

Any thoughts?

 

[cheesepuffs2]

Isn't that for Allison transmissions?

 

[userfriendly]

No, I think he meant it’s for a 4L60E.
Nevertheless unless a person is overly concerned with fuel economy, thicker is probably better in most cases.
Isn’t the 4L60E a Dex3H transmission?
So the question should have been, is a TES 995 or 668 suitable in a transmission that specifies D3M?