Switched to ATF in the primary... WOW!

[trmn8r]

OK its done deal. picked up a quart on the way home last night. changed it this a.m. Is it any better? Maybe hard to say, I never really had any true complaints about my clutch so its hard for me to say for sure.

I can say this much. at 10000 miles I went to plain ole Mobile 1 15-50 auto oil in the motor and primary... I know those in the know say it has to much of some type of friction inhibitor or something to use in a wet clutch. There are also those in the know who (forget the web sight some oil testing sight.. I'm sure someone knows the URL) have tested it and other oils and say the Mobile 1 V-Twin oil actually has more of these friction inhibitors in it so??? Anyway after my last oil change and again putting the 15-50 mobile 1 in the primary... maybe 3 times its seemed to me the clutch didn't hook up good when pulling hard in second gear...I would hear the motor reving higher faster than the bike was pulling. Only did it three times that I ever heard or felt. This morning after going to the B&M Trickshift synthetic I tried to duplicate that and couldn't. Was I imagining it before and it never happened? maybe but I don't think so. All I know for sure is I couldn't make it happen today.
So I at least feel better about it.

Originally Posted by trmn8r

OK its done deal. picked up a quart on the way home last night. changed it this a.m. Is it any better? Maybe hard to say, I never really had any true complaints about my clutch so its hard for me to say for sure.

I can say this much. at 10000 miles I went to plain ole Mobile 1 15-50 auto oil in the motor and primary... I know those in the know say it has to much of some type of friction inhibitor or something to use in a wet clutch. There are also those in the know who (forget the web sight some oil testing sight.. I'm sure someone knows the URL) have tested it and other oils and say the Mobile 1 V-Twin oil actually has more of these friction inhibitors in it so??? Anyway after my last oil change and again putting the 15-50 mobile 1 in the primary... maybe 3 times its seemed to me the clutch didn't hook up good when pulling hard in second gear...I would hear the motor reving higher faster than the bike was pulling. Only did it three times that I ever heard or felt. This morning after going to the B&M Trickshift synthetic I tried to duplicate that and couldn't. Was I imagining it before and it never happened? maybe but I don't think so. All I know for sure is I couldn't make it happen today.
So I at least feel better about it.

I'd go with that... the alternative is less calming.

My problem was starting from a dead stop, especially 2 up. I could romp it and it would be okay, but getting a smooth and gradual roll from a stop wasn't happening. It would be lurchy... no matter what I tried.

With the Amsoil ATF the roll on is just smooth and positive. Huge difference for me.

My ass is fat, your experience may vary.

[Keeper]

Isn't the Amsoil ATF 0 - 20W ?

Originally Posted by Angle

Isn't the Amsoil ATF 0 - 20W ?

I just checked the bottle... it doesn't give a weight. Dexron III synthetic along with some other equivalents.

[Keeper]

Originally Posted by 8-Ball

I just checked the bottle... it doesn't give a weight. Dexron III synthetic along with some other equivalents.

Found this link while reading up on ATF

http://www.pecuniary.com/newsletters...in-fluids.html

I was surprised when I read this. I figured it was thicker.

ATF Viscosity Characteristics
Product SAE Viscosity

Dexron II & Type F 5W-20

Dexron III, Mercon V & ATF Plus 4 0W-20

Caterpillar Powershift 10W, 30 & 50

[trmn8r]

the B&M TrickShift did look a little thin... got some on my hands it sure felt slick! A nice pretty blue color as well... that was a suprise... being ATF I was expecting red.

Went for another ride a bit ago, decided it must be doing a better job of lettting the clutch disengage when I pull the lever. I always put in it neutral before I kill it. Start it, pull the clutch and click into first. Used to it always had a pretty loud thunk as it went into first. I guess it was because the clutch was not letting go good, the oil causing some stickiness between the plates maybe. Now when I go into first its virtually silent. Also when shifting between gears its seems quieter... I guess for the same reason, the clutch plates are seperating and the oil film is not causing the plates to still effect each other.

I am now quite impressed with the change it has made.

I would think the clunk or not to clunk would be more the gear oil.

Anyone care to explain why slippery fluid between these plates actually causes them to grip?

I know it has something to do with sheer and the slipperyness keeps the plates from getting too hot. But if they slip too much, then they get hot and fry. It is a big mystery to me.

[trmn8r]

I've run Mobile 1 synthetic 75-140 gear lube in the tranny since the first time I changed it. That made the shifting a little quieter than with whatever factory had in it. Yesterday with Moble 1 oil in primary and mobile 1 gear lube in tranny CLUNK going into first and audible noise between every gear... now only change is to B&M Trickshift in primary and its completely different. I cant explain it any better than I tried in the last post but it "just is"

[Highmiles]

Possibly, the reason for the great shifting, is that all ATF is designed to lubricate gears, and improve friction in the clutch pack at the same time. It is also designed to cary heat away from the friction/stress points. What you are feeling, is the clutch pack being better lubricated, so that it disingages more freely. At the same time there are additives in the ATF that enhance clutch life and friction. It feels thin because it is also a hydraulic fluid. Because it is a fluid specifically designed for these chores, it really works great. It has to be superior over something like synthetic oil which is great in it's own right, but not designed for the application. The main reason I use Trick Shift, is that it was designed for High horsepower, and as a result will handle more heat cycles, and higher heat. It is absolutely uneccessary, and overkill, but it makes me feel better, so I do it.

Highmiles

[MegaGlide]

Originally Posted by 8-Ball

It is a big mystery to me.

There's a shock.
I'm mad at you, you know...

I'm not mad at you...

[Dinero]

Originally Posted by vafatboy

Here is a link to their dealers.


http://www.bmracing.com/index.php?id...try=California

Available at Pep Boys and Western Auto as well.

[george douglas]

Originally Posted by Highmiles

Possibly, the reason for the great shifting, is that all ATF is designed to lubricate gears, and improve friction in the clutch pack at the same time. It is also designed to cary heat away from the friction/stress points. What you are feeling, is the clutch pack being better lubricated, so that it disingages more freely. At the same time there are additives in the ATF that enhance clutch life and friction. It feels thin because it is also a hydraulic fluid. Because it is a fluid specifically designed for these chores, it really works great. It has to be superior over something like synthetic oil which is great in it's own right, but not designed for the application. The main reason I use Trick Shift, is that it was designed for High horsepower, and as a result will handle more heat cycles, and higher heat. It is absolutely uneccessary, and overkill, but it makes me feel better, so I do it.

Highmiles

You made a decent post until you made the statement that synthetic ATF wasn't designed for these chores. To make a good wet clutch oil it has no bearing whether it is dino based or synthetic based. It is all in the additives for the most part. I may have mis-understood what you meant, but many folks seem to think since it is synthetic it must be too slippery. This is another myth.

[trmn8r]

Originally Posted by Highmiles

Possibly, the reason for the great shifting, is that all ATF is designed to lubricate gears, and improve friction in the clutch pack at the same time. It is also designed to cary heat away from the friction/stress points. What you are feeling, is the clutch pack being better lubricated, so that it disingages more freely. At the same time there are additives in the ATF that enhance clutch life and friction. It feels thin because it is also a hydraulic fluid. Because it is a fluid specifically designed for these chores, it really works great. It has to be superior over something like synthetic oil which is great in it's own right, but not designed for the application. The main reason I use Trick Shift, is that it was designed for High horsepower, and as a result will handle more heat cycles, and higher heat. It is absolutely uneccessary, and overkill, but it makes me feel better, so I do it.

Highmiles

Originally Posted by george douglas

You made a decent post until you made the statement that synthetic ATF wasn't designed for these chores. To make a good wet clutch oil it has no bearing whether it is dino based or synthetic based. It is all in the additives for the most part. I may have mis-understood what you meant, but many folks seem to think since it is synthetic it must be too slippery. This is another myth.

I thought he was saying that ATF was designed for these chores.

unless your referring to his last sentance where he says its unnecessary and overkill... there I think he's just referring to the Trick Shift being overkill... more than needed... that maybe standard ATF would be fine.

all I know is I am glad I tried it I am happy with the results.

[Highmiles]

Originally Posted by george douglas

You made a decent post until you made the statement that synthetic ATF wasn't designed for these chores. To make a good wet clutch oil it has no bearing whether it is dino based or synthetic based. It is all in the additives for the most part. I may have mis-understood what you meant, but many folks seem to think since it is synthetic it must be too slippery. This is another myth.

George,

I mentioned synthetic OIL but I'm not aware of any statements I made with regard to synthetic ATF.

Highmiles