Some later ZF 6HPs specify Green Lifeguard 8. You need to check the label on it and compare with EKTA.
http://www.realoem.me/Audi/RDW/A8/2006/291/R/3
below is the snippet for my HYT transmission, depending on gearbox serial, code and software revision...
№ Code Title Note Quantity Model data
6-speed automatic gearbox with interaxle differential, ----------6-HP-19---------- 3.0/3.2ltr., 4.2 ltr., FSI GZV,HRK,HKL,, HKX,HYT,JAY,, HYU,JNM,HKM,, JNL
(1) 09E300036A 6-speed automatic gearbox with interaxle differential, with software: 4.0 ltr., 4E0 910 156 B 1 GVK
2 09L300036M 6-speed automatic gearbox with interaxle differential, software: 4E0 910 156 F 1 GZV
2 09L300036MX 6-speed automatic gearbox with interaxle differential, software: 4E0 910 156 F 1 GZV
2 09L300038H 6-speed automatic gearbox with interaxle differential, software: 4E1 910 156 M 1 HRK
2 09L300037G 6-speed automatic gearbox with interaxle differential, software: 4E1 910 156 A 1 HKL
2 09L300037GX 6-speed automatic gearbox with interaxle differential, software: 4E1 910 156 A 1 HKL
2 09L300039C 6-speed automatic gearbox with interaxle differential, software: 4E1 910 156 A 1 HYT,HKL
2 09L300039CX 6-speed automatic gearbox with interaxle differential, software: 4E1 910 156 A 1 HYT
2 09L300037GX 6-speed automatic gearbox with interaxle differential, software: 4E1 910 156 A 1 HKL
2 09L300039M 6-speed automatic gearbox with interaxle differential, software: 4E1 910 156 N 1 JAY
2 09L300039MX 6-speed automatic gearbox with interaxle differential, software: 4E1 910 156 N 1 JAY
2 09L300041T 6-speed automatic gearbox with interaxle differential, software: 4E1 910 156 Q 1 JNL
2 09L300040K 6-speed automatic gearbox with interaxle differential, software: 4E1 910 156 Q 1 JNL
2 09L300040KX 6-speed automatic gearbox with interaxle differential, software: 4E1 910 156 Q 1 JNL
2 09L300037H 6-speed automatic gearbox with interaxle differential, software: 4E1 910 156 B 1 HKX
2 09L300037HX 6-speed automatic gearbox with interaxle differential, software: 4E1 910 156 B 1 HKX
2 09L300039D 6-speed automatic gearbox with interaxle differential, software: 4E1 910 156 B 1 HYU,HKX
2 09L300039DX 6-speed automatic gearbox with interaxle differential, software: 4E1 910 156 B 1 HYU,HKX
2 09L300040L 6-speed automatic gearbox with interaxle differential, software: 4E1 910 156 R 1 JNM
2 09L300040LX 6-speed automatic gearbox with interaxle differential, software: 4E1 910 156 R 1 JNM
2 09L300042A 6-speed automatic gearbox with interaxle differential, software: 4E1 910 156 C 1 HKM
2 09L300037J 6-speed automatic gearbox with interaxle differential, software: 4E1 910 156 C 1 HKM
2 09L300037JX 6-speed automatic gearbox with interaxle differential, software: 4E1 910 156 C 1 HKM
(2A) G 055005A2 atf (automatic transm. fluid), filling quantity:, see workshop manual, GN 4000001>> 4000597, GN >> 95253 1.0 ltr., 9,0LTR., yellow, yellow X;1 GZV,HRK,HKL,, HKX
(2A) G 055005A6 atf (automatic transm. fluid), filling quantity:, see workshop manual, GN >> 4000597, GN >> 95253 20ltr., 9,0LTR., yellow, yellow X;1 GZV,HRK,HKL,, HKX
(2A) G 055162A2 atf (automatic transm. fluid), filling quantity:, see workshop manual, GN 4000598>> 4005000, GN 95254>> 100000 1.0 ltr., 9,0LTR., blue, blue X;1 GZV,HRK,HKL,, HKX,HYT,JAY,, HYU,JNM,HKM
2A G 060162A2 atf (automatic transm. fluid), filling quantity:, see workshop manual 1.0 ltr., 9,0LTR., green X;1