[Boostedphil698]

Originally Posted by isenc2

Here is what Wavetrac says:

Your new Wavetrac® differential is incredibly durable and will withstand the harshest environments...as long as suitable oil is used. Many customers ask what oil we recommend for use with the Wavetrac® differential. We feel the best answer is:
Use the "factory fill."
In other words, use the gear oil spec that your car manufacturer recommends for your car. The Wavetrac® is compatible with virtually all factory-installed gear oils used today. If you are racing your vehicle, and wish to upgrade the gear oil to improve performance or durability in racing conditions, choose the oil carefully: be aware that some gear oils have additives that are not recommended for use with your Wavetrac®.
Some have friction modifiers designed for limited slip differentials. These modifiers generally increase slipperiness and are intended to reduce clutch disc chatter in conventional clutch-type LSDs. Some gear oils such as Red Line Oil's Shockproof® type have microscopic solid particles in immersion in order to "cushion" transmission components, acting as an extreme pressure agent. The Wavetrac® and all helical gear differentials in general, operate using friction. The friction generated between its internal gears and its housing are what allow this type of differential to function.
Gear oil additives that drastically reduce friction will actually reduce the performance of gear differentials. The internals of the diff get too slick to generate adequate friction - reducing the differential's effectiveness - reducing its ability to drive both wheels.
In [...]

I'm familiar with the wavetrac language and I would follow it. But, reach out to Dan and see why he recommends Redline despite wavetrac saying otherwise.

[isenc2]

Originally Posted by Boostedphil698

I'm familiar with the wavetrac language and I would follow it. But, reach out to Dan and see why he recommends Redline despite wavetrac saying otherwise.

I will give them a call today. Very curious to see what they say about this.

[Boostedphil698]

Originally Posted by isenc2

I will give them a call today. Very curious to see what they say about this.

Let us know what happens.

[isenc2]

Originally Posted by Boostedphil698

Let us know what happens.

I have gotten my wavetrac in, still only got 120 miles on it, so far, it has been amazing. Noticed nothing on decel, no noise in parking lots. Light throttle cornering has been great, subtle yet amazing. The car just feels lighter during cornering.

[Boostedphil698]

Originally Posted by isenc2

I have gotten my wavetrac in, still only got 120 miles on it, so far, it has been amazing. Noticed nothing on decel, no noise in parking lots. Light throttle cornering has been great, subtle yet amazing. The car just feels lighter during cornering.

That's awesome. I knew you'd love it. Did you ever get to talking with diffsonline about the fluid?

[isenc2]

They are unresponsive as usual. Will try again later, but Dan is super unavailable.

[Darkpira7e]

Very curious if this will help the open diff in the snow/ice. Not sure why AWD cars now don't have an LSD from factory, it makes a world of difference.
How does the Wavetrac deal with 0 friction situations, like on ice?

[isenc2]

Originally Posted by Darkpira7e

Very curious if this will help the open diff in the snow/ice. Not sure why AWD cars now don't have an LSD from factory, it makes a world of difference.
How does the Wavetrac deal with 0 friction situations, like on ice?

There’s a video on this on YT actually. Wavetrac behaves very similarly to a clutch type when one wheel on ice. So don’t expect anything like a diff locker, but still way better than open diff. Also, apply light brakes in conjunction with a gear type LSD will get you the traction you need.

[isenc2]

Originally Posted by Boostedphil698

That's awesome. I knew you'd love it. Did you ever get to talking with diffsonline about the fluid?

Just spoke to Dan today, surprising answers from him. First he told me to not worry about Wavetrac’s warning against RedLine. Just forget it, he’s seen great results with Redline with Wavetrac. Also, he emphasizes that REM polishing does not negate break in. Since we do have brand new gears inside the ATB, those still need to be properly broken in. And now I’ll probably return the BMW fluid from FCP Euro and buy some of those Redline, saves a ton of money for me honestly. BTW, I’m loving my Wavetrac more and more each day.

[Boostedphil698]

Originally Posted by isenc2

Just spoke to Dan today, surprising answers from him. First he told me to not worry about Wavetrac’s warning against RedLine. Just forget it, he’s seen great results with Redline with Wavetrac. Also, he emphasizes that REM polishing does not negate break in. Since we do have brand new gears inside the ATB, those still need to be properly broken in. And now I’ll probably return the BMW fluid from FCP Euro and buy some of those Redline, saves a ton of money for me honestly. BTW, I’m loving my Wavetrac more and more each day.

Very interesting. Idk why I paid for REM polishing then. I also now worry I damaged the gears lol. I can't remember doing a ton of hammering on the diff though.

[isenc2]

Originally Posted by Boostedphil698

Very interesting. Idk why I paid for REM polishing then. I also now worry I damaged the gears lol. I can't remember doing a ton of hammering on the diff though.

I will say this, since you did not track the car during break in or any crazy autoX, you should be completely fine. Also, one of the benefits of the Redline fluid is to help with load during break in, so since you used Redline during break in, you got the added protection. I'm still on the fence of ordering Redline fluid currently, will probably contact wavetrac tomorrow to ask about the friction modifiers. My only concern as of right now is that redline fluid might be too slippery that my wavetrac's nice whip-around effect will be reduced.

[Boostedphil698]

Originally Posted by isenc2

I will say this, since you did not track the car during break in or any crazy autoX, you should be completely fine. Also, one of the benefits of the Redline fluid is to help with load during break in, so since you used Redline during break in, you got the added protection. I'm still on the fence of ordering Redline fluid currently, will probably contact wavetrac tomorrow to ask about the friction modifiers. My only concern as of right now is that redline fluid might be too slippery that my wavetrac's nice whip-around effect will be reduced.

Also true! My car whips around I will say but I know wavetrack has that wave hub which helps with low grip situations.

[isenc2]

Originally Posted by Boostedphil698

Also true! My car whips around I will say but I know wavetrack has that wave hub which helps with low grip situations.

Contacted wacetrac today, they have still maintained their reasoning for advising against LSD friction modifiers. They have suggested the Motul 75W90 gear oil for me to use on the street. They confirmed my suspicion that Redline friction modifier is so slippery that it does in fact decrease the effective bias ratio/lock up ratio for the wavetrac unit(does not eliminate lock up tho). I guess I'm listening to the manufacturer on this one.

[Boostedphil698]

Originally Posted by isenc2

Contacted wacetrac today, they have still maintained their reasoning for advising against LSD friction modifiers. They have suggested the Motul 75W90 gear oil for me to use on the street. They confirmed my suspicion that Redline friction modifier is so slippery that it does in fact decrease the effective bias ratio/lock up ratio for the wavetrac unit(does not eliminate lock up tho). I guess I'm listening to the manufacturer on this one.

You can definitely run it. Just make sure to change the fluid more often.

[isenc2]

Originally Posted by Boostedphil698

You can definitely run it. Just make sure to change the fluid more often.

Currently planning 2-3 years per fluid change. Due to work, I will live in Phoenix. Will most likely stick to 2 yrs per change since it gets like 120F here in Phoenix in the summer.

[isenc2]

My review posted in the B58 discussion section!