pilote Posted March 31, 2017 Report Share Posted March 31, 2017 Hello everyone, 5002013 on a Shelby GT with Track Pack Performance Pack and therefore with Torsen and 3.31, he must add a friction modifier? I ask the question because in the operating manual, the manufacturer said to then I read on forums with a Torsen it should not add any additives. I do not know what to think especially members have Royal Purple and AMSOIL 75W90 or 75W140 with friction modifiers. If so do not put I like to know the reason please ... thank you in advance Quote Link to comment Share on other sites More sharing options...
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