what diff fluid do you guys use?
Senior Member
Joined: Jul 2002
Posts: 1,110
Likes: 1
From: Statesville, NC
Not unless you have a front limited slip. I am not aware of any factory installed, so it would have had to have been done aftermarket.
Senior Member
Joined: Feb 2006
Posts: 3,762
Likes: 0
From: Windsor, Ont.
Quaker State 75-140, good stuff so far. I had RP in before, drained because the cover was leaking pretty bad. Quaker State was readily available so went with it. PS, use a Fel-pro cover gasket, I used silicone and it leaks pretty easy. At least the paper gasket, you can take things apart, drain, clean the surfaces, apply gasket, bolt the cover back on and refill in shorter time. I don't have all day to let the silicone cure before bolting back up and refilling.
Senior Member
Joined: Mar 2009
Posts: 290
Likes: 0
From: Northwest Ohio
Advise a synthetic because it really will reduce rolling resistance and flows much better cold. FMs as, if and when you need it. Some syns say they don't need it but do and some don't say they do but don't. Whether they do or don't seems to be a combination of circumstances, such as the type of LSD and the oil.
I just add the oil drive it around a little (figure 8s in the parking lot) and you'll know. Add the FM an ounce at a time, try again and repeat until the chatter stops. FMs reduce the oil's oxidation resistance and decreases viscosity a little so I try to add only as much as is needed. The negative effects of FMs aren't always an issue for people and less likely to be one if you don't tow a lot or tow heavy.
Interestingly, my Auburn is starting to chatter a little after about 20K miles. Auburn requires non synthetic oil with FM. My intention is to drain the oil and have it tested. I am tempted to try some synthetic in it short term, despite what Auburn says. I had a great conversation with their engineering staff about it and they explained why they recommend mineral oil, and it makes perfect sense, but I am interested to see in the syn alone will leave it with a chatter or not.
I just add the oil drive it around a little (figure 8s in the parking lot) and you'll know. Add the FM an ounce at a time, try again and repeat until the chatter stops. FMs reduce the oil's oxidation resistance and decreases viscosity a little so I try to add only as much as is needed. The negative effects of FMs aren't always an issue for people and less likely to be one if you don't tow a lot or tow heavy.
Interestingly, my Auburn is starting to chatter a little after about 20K miles. Auburn requires non synthetic oil with FM. My intention is to drain the oil and have it tested. I am tempted to try some synthetic in it short term, despite what Auburn says. I had a great conversation with their engineering staff about it and they explained why they recommend mineral oil, and it makes perfect sense, but I am interested to see in the syn alone will leave it with a chatter or not.
