Jeep WJ LSD oil additive

[pcn1]

I noticed my front tires were "crabbing" + the associated noise when driving down some tight turns on a multi-story car park.
I did the LSD oil last year and used some of the Jeeps additive, but slightly less than their recommended qty. Its been fine since then until now.

Looks like I need to add a bit more, my local dealer is gone, so is there any online suppliers I should check out ?

Cheers

[pcn1]

I'm not having much luck on e-bay at the moment. All the Genuine Chrysler additives are by German sellers with big postage charge.
However there are UK sellers of alterative makes, Red line and Active 8, if anyone has used these products and can comment ?

Cheers