do I need an additive in my 8 3/4 sure grip?

Daves69 said

Here's one of those then.
Straight Mobil 1 Synthetic LS lube didn't happen for me. Night and day difference with the additive.

Click to expand...

Yeah I have no idea why some do and some don't and the run it to find out really sucks. Oh and if you have to much it won't lock up....there has to be a better way lol.