Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum - View Single Post - Small Questions Thread (SEARCH FIRST! Use this instead of making NEW threads)

PNgo12 · 12-11-2011, 04:46 PM

Okay I'm not yet ready to accept that my VLSD is going bad that it's turning into an open.

I've googled searched and nothing really satisfied what I need to know. I'm running 75/90 redline gear oil in my diff but its not really locking and I don't remember if I used GL-4 or 5 but when I searched some are saying use GL-4 while others say use GL-5 and some say use the additive and some say don't since its already a closed unit and does not need it. I'd like to put this to rest. Should I be using GL-4 or 5 and do I need the LSD additive? I'm also going to be switching up to 80/90

12-11-2011, 04:46 PM	#8834
PNgo12 Zilvia Junkie Join Date: Feb 2010 Location: Westminster Age: 32 Posts: 373 Trader Rating: (19)	Okay I'm not yet ready to accept that my VLSD is going bad that it's turning into an open. I've googled searched and nothing really satisfied what I need to know. I'm running 75/90 redline gear oil in my diff but its not really locking and I don't remember if I used GL-4 or 5 but when I searched some are saying use GL-4 while others say use GL-5 and some say use the additive and some say don't since its already a closed unit and does not need it. I'd like to put this to rest. Should I be using GL-4 or 5 and do I need the LSD additive? I'm also going to be switching up to 80/90