
ive got a cosworth 7.5" limmited slip diff but dont know what oil to use??
Ive been to halfords and in there oil chart is says to use 80-90 but it also says to use this same oil for the none LSD??
is that right?? ive been told you need a different oil for a LSD??
Can anyone help 
Sierra LSDs have a sealed viscous coupling bolted inside a normal open diff, making it an LSD. You use normal diff oil in them as the voscous coupling is sealed.