I posted this on Ls2 forums but didn't get a response, maybe someone here can help...
I'm doing my diff. service and I ordered the diff friction modifier part # 89021958 from GMpartsdirect.com. Then I found this from www.dealersedge.com:
"If you order 89021958 and received a bottle with part number 43161 it is definately incorrect. I spoke to another ParTech agent who finally found the case on this issue. Make sure to perform a RFI when ordering this fluid to insure you get the correct Fluid."
So sure enough I get a bottle with 43161 on it. So I send GMpartsdirect.com an e-mail asking about this and they send me:
"This information is correct, you did receive the incorrect fluid. We will be sending DHL by to pick up the part please have the part ready to ship back to us. If you are not going to be home please leave the parton the front porch and put a piece of paper on the box saying (pickup) so that DHL will know what to pickup. Please do not write on the Gm box or we will not be able to take the part back.
We will ship you the correct fluid once we have received the incorrect
fluid back. We apologize for the delay of your order. Please make sure
the part is picked up the first time or you will be responsible to
return the part back to us. They will be by in the next 1-2 business
days between 11am-4pm.
Then 10 minutes later they send me this:
"We had ParTech call us back and give us the update that the additive is
So does anyone know the real deal, is 43161 the correct additive or not?