Without LSD additive, the oil is actually too GRABBY. You'll get awful noises and the car will go between locked and unlocked differential too fast. In otherwords, don't try it in the rain.

I'm more of a fan of the non-LSD gear oil with the LSD additive. That way you can 'tune' the LSD to how you want it. The stiffer the plate lockup on an LSD, the less plate wear occurs. One cannot, however, overlook the affects of shocking the rest of the driveline.

My thoughts on Amsoil are the same as Eric's-- the marketing pushes information down the consumer's throat by people not qualified to give it. I was merely giving the cost breakdown of the Amsoil which was requested. Nothing more, nothing less.

Ester based lubes intrigue me, ones like Redline, Neo and Motul. Redline is the easiest of that group to find, and also has the most data to decide with.

ferb!

 

Good info Ferb!!

Tune out you LSD with adding Friction Modifiers. That's good thinking.

Eric

 

Hey all,

I use the Redline MTL in the transaxle, and I have NEO RHD in the transfer case and rear diff. Works great, although the NEO is spendy. Luckilly, you don't need much for the two diffs. There is also a cheaper version of NEO that the Subaru guys (nasioc.com) have reported good results, but I figured I would splurge for the high end NEO RHD. I stuck with Redline MTL for the transfer case since it's a GL-4 fluid as specified by Mitsu.

I changed the fluids at ~3k miles, and I'm going to do it again at 15K (I'm at 12K now).

Baker's Precision carries the NEO, don't have the url handy, but I'll find it and edit the post.

Take care,

FB

 

You from the SoCal area? Seems Neo Synthetic isn't all too well-known outside of the immediate area.

Using a di-ester base instead of the polyol Redline, et al, uses, it presents a different idea to synthetic oils. Di-esters stand up like bristles on a brush, packing the surface with lube. They provide a higher flashpoint and better cold temperature performance. But are oxidized a bit easier and can't really be made in high viscosity bases.

ferb!

 

Whatup,

I'm from New England. I heard about NEO when I was researching gear oils for my wife's WRX. Several Nasioc members had problems with Redline MTL in the WRX, but I think this may be because the WRX requires a GL-5 fluid and redline MTL is GL-4.

It seemed that NEO had the most positive empirical results, or the least negative empirical results from the NASIOC members. I'm very happy with it in the WRX, shifts great.

For my EVO, the switch to redline and NEO along with time and 12K miles have tamed the dreaded decel noise. Interesting that you mention cold temp perf, since my EVO doesn't seem to shift as well as the WRX, until the car is warmed up.

Take care,

FB