A8 shudder issues? - ZR-1 Net Registry Forums

Hib Halverson · 04-16-2021

In fact, your experience with the 8L90 fluid change to solve the torque converter clutch shudder problem, is rare but not uncommon because I have heard about other cases of dealers not flushing with the right fluid. Either dealers did not pay attention to what GM was telling them as far as how to "fix" the issue or they cut corners on cost by not buying the correct fluid.

Currently, the onlyfluid approved for use in the 8L90/8L45 is Mobil 1 Synthetic LV ATF HP.

04-16-2021	#1
Hib Halverson Join Date: Jun 2005 Location: CenCoast California Posts: 899	Re: A8 shudder issues? In fact, your experience with the 8L90 fluid change to solve the torque converter clutch shudder problem, is rare but not uncommon because I have heard about other cases of dealers not flushing with the right fluid. Either dealers did not pay attention to what GM was telling them as far as how to "fix" the issue or they cut corners on cost by not buying the correct fluid. Currently, the onlyfluid approved for use in the 8L90/8L45 is Mobil 1 Synthetic LV ATF HP. __________________ Hib Halverson Technical Writer former owner 95 VIN 0140 current owner 19 VIN 1878