runs great and shifts a lot smoother
584513
ordered on tuesday, delivered on thursday.  $43 for 6 quarts + a $6 instant rebate.  AND free shipping.  vulcan 1600 loves it.  runs great and shifts a lot smoother.  great deal.
1609748
Was experiencing the passenger side rattle that felt like the inside of the cabin was going to shake apart.  Also noticed that the shifting was a little sluggish.  Took to dealer and had them do the transmission flush and also give a quote on replacing the motor mount (I had done my homework already to find the part and estimate the labor).  As most people know, the part is $265 and the labor estimate was 1.5 - 2.0 hours.  That's about $450 installed!

I was able to install this myself by looking at a youtube video and buying a deep socket and a breaker bar for one of the nuts (had all other tools) - it took me about four hours including going to town twice.  My time was also extended because 1) it takes a little bit of work to get the part in and out of place around the hard brake lines, and 2) I had to put it in and take it out twice because I forgot to drill out the mounting holes.  The reviews here are right - the mounting holes need a little bit of reaming so the bolts will go through, but that was about five minutes with the Dremel and/or a 1/2-inch drill bit.

After install, the car purrs like the proverbial kitten and the shifting is much smoother.  I am extremely pleased with the result.  We will just have to see what kind of mileage it returns.  Comparing this part to the factory part that was replaced (6-years 114k miles on it), the only difference appears to be the quality of the welds on the base are cleaner on the factory part.  This has no bearing on the part itself or the install, aside from the mounting holes I already mentioned.
3678832
Smooth shifting, quiet running, good price. Can't complain!
2667143
Currently running this in my 1999 Mazda Miata 5-speed transmission.  Once the transmission has warmed up some shifting is very smooth.  Highly recommend this for a better driving experience and a better piece of mind that your transmission is well protected and lubricated.
787213
Great.  Runs smooth.  Need to get power to choke before cold weather.
4122312
I didn't have any differential problems or noises that I know of in my '98 BMW 323is, but at 137,000 miles and not changed for at least 100k miles I figured I'd do this and the manual trans fluid.  I'll review the trans fluid there (Royal Purple Synchromax) since that made a huge difference.  My car runs much quieter and smoother after the fluid changes.  I can not really tell if this oil made a difference in the differential since I did several changes at once but it definitely didn't make things worse.  The old differential oil came out completely clear and was as much fluid as expected so I'm pretty sure things have been running as expected back there.

After I had already ordered this I found that some BMW owners run Mobil 1 gear oil in the differential since it is said to run cooler there than RP or Redline oil.  So I could have saved several dollars per quart and maybe gotten better performance, but I don't drive the car hard so this will do just fine. 5 stars since my car is running so much better that I'll give some credit to this oil.

Update 06/2012 - Several tanks of gas later and my MPG is higher.  Since I replaced the trans fluid and this at the same time, not sure which or if both made the difference.  Really improved the highway MPG, and it just did 32.09 MPG, doing the relatively flat round trip Los Angeles to Palm Springs plus some other mainly highway driving. My car has been getting 23 to 24 for the last two years and maybe 25 to 26 before that.  I've only hit 32 mpg once before in August 2009, and have had only 6 tanks of gas get over 30 mpg in the almost 12 years I've owned the car.  Stop and go driving is just slightly higher than before though as the prior three tanks of gas were 23.03 mpg, 27.38 mpg, 24.99 mpg.
80235
Installed this along with the Shimano RD-M410 Alivio SGS Rear Derailleur.  They corrected the chattering and skipped gears experienced the OEM devices.  Triggers are much easier to use than the original twist shift.
4541932
Love this,made a huge difference in how my bike runs.. now it runs like 103 CI is supposed to run, was a seamless and easy setup, easy to change autotune made it run a little wonky but worked itself out.. 2016 FLHXS
2414649
Was sceptical but my 02 7.3 starts much easier when cold and runs much better cold so i don't have to let it idle for 15 min every morning. And it extends the oil life so i will definitely be buying this again a next oil change
1781040
Bought this 'cause I destroyed a Shimano acera by picking up a stick while trail riding. I own 3 bikes all of which have Shimano drive trains---until now. This derailleur shifts really smooth and quick and because it keeps more "tension" on the chain it stops most of the chain slap on rough terrain. Just be fore warned as Sram states in their description of this derailleur--YOU WILL NEED TO PAIR WITH SRAM SHIFTERS--this derailleur has a 1 to 1 actuation ratio most Shimano rear derailleur ratios are 2 to 1 and the shifters are not compatible. But in the end it's well worth the investment.
4900928
Bossted performance on my t500, especially when booting. Additional software is great for tune up (more performance, more reliability, less power consuption). Not a single failure/crash since I installed, even with heavy use (several days running, heavy data traffic). Would definitly buy again.
264785
157,000 original miles. This is the first time it has been drained and filled. Symptoms: shifting was choppy, stiff, and difficult. I thought maybe clutch or MC/Slave going bad. After, drain and fill, shifting is noticeably smoother. Almost like when it was new. Fun to drive again. I am very happy. Thanks Redline tech support.
4154186
I put this transmission oil in my 2002 HD Softail Night Train. It made shifting a lot smoother and quieter! I will keep using this oil!
385254
now that i've changed all the necessary bushing on my 18-year honda civic, it run much better now. handling and control have changed dramatically.
1293805
WORKED GREAT- DID NOTICE MORE SPEED IMPROVEMENT OVERALL AND MORE DRIFTING STABILITY-
3541644
My 02 Intrigue was sticking a little coming out of first and this made shifts smooth as butter again.
4378116
Installed in a 1975 Ford Bronco with a C4. The shifts are much firmer than factory, but not neck breaking like some. With a light throttle the shifts are mild and hardly noticeable. Under full throttle they hold the RPM and shift hard just as it should.

The instructions are very clear and walk you through each step. If you are handy with tools there is not reason you couldn't install this kit yourself. The springs are color coded so you know exactly where each one goes. This kit is much better than the B&M kit that just replace the shift plate.

Trans Go Tech line is also top notch. The helped me troubleshoot a self inflicted problem and through several phone calls we got it figured out.

This kit does not come with a filter, so while you are in there you should pick one up and install it.