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Oil's affect on motorcycle gear shift feel? #3842127
09/03/15 07:00 PM
09/03/15 07:00 PM
Joined: Apr 2008
Posts: 1,052
FL
digitalSniperX1 Offline OP
digitalSniperX1  Offline OP
Joined: Apr 2008
Posts: 1,052
FL
Besides viscosity, what is it about oil that creates smooth shifting and dampens notchiness? In fact, two different and high quality oils with the same viscosity can feel very different. Any input would be appreciated. Thanks.


'18 Honda Accord 2.0t-Mobil 1-EP 0w20
'18 Toyota Highlander-Mobil 1-EP 0w20
'12 Honda NC700X T6
'14 Kawasaki ZX-14R Yamalube 15w50
Re: Oil's affect on motorcycle gear shift feel? [Re: digitalSniperX1] #3842129
09/03/15 07:02 PM
09/03/15 07:02 PM
Joined: Jun 2012
Posts: 1,699
USA
oldhp Offline
oldhp  Offline
Joined: Jun 2012
Posts: 1,699
USA
I would say friction modifiers.



Re: Oil's affect on motorcycle gear shift feel? [Re: digitalSniperX1] #3842131
09/03/15 07:02 PM
09/03/15 07:02 PM
Joined: May 2010
Posts: 287
Alaska
AlaskaMike Offline
AlaskaMike  Offline
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Posts: 287
Alaska
My 1998 Honda CBR900RR spec'd 10w40, and at one point I tried 20w50 full synthetic to see if that might do exactly as you describe. It didn't, and in fact made it shift noticeably worse. I ended up going to the same Chevron Delo 400 15w40 that I use in my diesel truck, and it worked beautifully with that.

Re: Oil's affect on motorcycle gear shift feel? [Re: digitalSniperX1] #3842137
09/03/15 07:08 PM
09/03/15 07:08 PM
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Posts: 1,052
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digitalSniperX1 Offline OP
digitalSniperX1  Offline OP
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In my case it's a 2014 Kawasaki zx14r. 15w40 felt fine (shell) and 15w50 (m1) shifts fine. 10w40 m1 high mileage however is pretty darn notchy. I just changed it and may dump it for other use.


'18 Honda Accord 2.0t-Mobil 1-EP 0w20
'18 Toyota Highlander-Mobil 1-EP 0w20
'12 Honda NC700X T6
'14 Kawasaki ZX-14R Yamalube 15w50
Re: Oil's affect on motorcycle gear shift feel? [Re: oldhp] #3842139
09/03/15 07:10 PM
09/03/15 07:10 PM
Joined: Apr 2008
Posts: 1,052
FL
digitalSniperX1 Offline OP
digitalSniperX1  Offline OP
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Maybe but what I'm describing isn't clutch related.


'18 Honda Accord 2.0t-Mobil 1-EP 0w20
'18 Toyota Highlander-Mobil 1-EP 0w20
'12 Honda NC700X T6
'14 Kawasaki ZX-14R Yamalube 15w50
Re: Oil's affect on motorcycle gear shift feel? [Re: digitalSniperX1] #3842145
09/03/15 07:24 PM
09/03/15 07:24 PM
Joined: Jul 2007
Posts: 960
SACRAMENTO, CA
rrounds Offline
rrounds  Offline
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SACRAMENTO, CA
Originally Posted By: digitalSniperX1
In my case it's a 2014 Kawasaki zx14r. 15w40 felt fine (shell) and 15w50 (m1) shifts fine. 10w40 m1 high mileage however is pretty darn notchy. I just changed it and may dump it for other use.

I have found that 15/40 HDEO oil works best in my bikes(DRZ 400, Suzuki 1500 and a 1100 Honda). I might even try it out in my Goldwing when I change the oil in it.

ROD


'06 S2000
'00 SSEi sold at 252k miles
'08 Ford F53 V10
'13 Jeep Sahara 2 door
Re: Oil's affect on motorcycle gear shift feel? [Re: digitalSniperX1] #3842157
09/03/15 07:41 PM
09/03/15 07:41 PM
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Posts: 1,052
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digitalSniperX1 Offline OP
digitalSniperX1  Offline OP
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I think this question is pretty complicated. We try oils find some we like and some we don't ( for the shift feel ). What we don't know is what the oil blender has done or not done to produce the best results. I think we probably all agree that notchy, clunky shifts are not desired and smooth, cushy shifts are what we desire.


'18 Honda Accord 2.0t-Mobil 1-EP 0w20
'18 Toyota Highlander-Mobil 1-EP 0w20
'12 Honda NC700X T6
'14 Kawasaki ZX-14R Yamalube 15w50
Re: Oil's affect on motorcycle gear shift feel? [Re: digitalSniperX1] #3842165
09/03/15 07:52 PM
09/03/15 07:52 PM
Joined: Aug 2011
Posts: 724
Michigan
FastGame Offline
FastGame  Offline
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Posts: 724
Michigan
Originally Posted By: digitalSniperX1
In my case it's a 2014 Kawasaki zx14r. 15w40 felt fine (shell) and 15w50 (m1) shifts fine. 10w40 m1 high mileage however is pretty darn notchy. I just changed it and may dump it for other use.


Why the Mobil 1 HM oil in the ZX14r ?

My KZ 1000 shifts the same no matter what oil is used. Haven't had my Concours 14 long enough but it's been the same shift wise on M1 4T 10W-40, M1 V-Twin, M1 15W-50, Rotella 15W-40.

Like you, I would also like to know what would make shifting change between brands/types of oil.

Re: Oil's affect on motorcycle gear shift feel? [Re: digitalSniperX1] #3842172
09/03/15 07:59 PM
09/03/15 07:59 PM
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digitalSniperX1 Offline OP
digitalSniperX1  Offline OP
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FL
M1 HM has zddp ppm similar to motorcycle and other higher zddp blends.


'18 Honda Accord 2.0t-Mobil 1-EP 0w20
'18 Toyota Highlander-Mobil 1-EP 0w20
'12 Honda NC700X T6
'14 Kawasaki ZX-14R Yamalube 15w50
Re: Oil's affect on motorcycle gear shift feel? [Re: digitalSniperX1] #3842173
09/03/15 08:00 PM
09/03/15 08:00 PM
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digitalSniperX1 Offline OP
digitalSniperX1  Offline OP
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My Ducati didn't seem to care much either but it mostly got amsoil. Tried m1 hm in it seemed fine. And 15w40.


'18 Honda Accord 2.0t-Mobil 1-EP 0w20
'18 Toyota Highlander-Mobil 1-EP 0w20
'12 Honda NC700X T6
'14 Kawasaki ZX-14R Yamalube 15w50
Re: Oil's affect on motorcycle gear shift feel? [Re: digitalSniperX1] #3842213
09/03/15 08:33 PM
09/03/15 08:33 PM
Joined: Jul 2007
Posts: 4,196
Midwest USA
LoneRanger Offline
LoneRanger  Offline
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Posts: 4,196
Midwest USA
Interesting this thread is when it is, as I just changed oil 500 miles ago in the Ducati and switched brands from Silkolene to Spectro. Pretty radical shift from a full ester oil to a PAO/ester blend that's more PAO than ester in the blend ratio. The Spectro's chemistry must still be in the process of setting up because it feels notchy in the gear box. Both the Silko and the Spectro were 15W50.

Best oil for the gears was Mobil 1 Racing 4T 10W40. The bike just shifted like butter and the clutch was smooth yet positive. But in the summer the Mobil 4T 40 weight was too thin and the desmo valve train noise was louder than I was comfortable with.

I'm sure the Spectro's chemistry will set up on the metal surfaces in a few hundred more miles, but for now it feels worse than the silkolene in the gears and clutch action.



'09 Subaru Forester ...................(QS HM 5W30)
'16 Moto Guzzi Stelvio 1200 .....(ENI i-Ride PG 10W60)
Re: Oil's affect on motorcycle gear shift feel? [Re: digitalSniperX1] #3842221
09/03/15 08:37 PM
09/03/15 08:37 PM
Joined: Oct 2014
Posts: 447
SSP mn
hansj3 Offline
hansj3  Offline
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Posts: 447
SSP mn
Some bikes are different. The 87 klr I bought 2 years ago is like that. Its notchy on delo, but the first highway run of the day it slips on the on ramp for 30 sec or so
Rotella is too slick feeling and its hard to find gears, but didn't slip as bad.

Probably the warn clutch has something to do with it....

Re: Oil's affect on motorcycle gear shift feel? [Re: digitalSniperX1] #3842263
09/03/15 09:13 PM
09/03/15 09:13 PM
Joined: Jun 2009
Posts: 1,123
Missouri
ledslinger Offline
ledslinger  Offline
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Posts: 1,123
Missouri
I've only had my V45 Sabre for 33 years, but only one oil ever caused poor shifting. I drained the Valvo synth 4T 10W40 after 500 miles. Thought my hydraulic clutch system was the culprit and then changed the oil on a whim. The Castrol Act Evo 10W40 immediately shifted like butter. The Valvo synth is going in the mower.

Re: Oil's affect on motorcycle gear shift feel? [Re: digitalSniperX1] #3842270
09/03/15 09:22 PM
09/03/15 09:22 PM
Joined: Oct 2014
Posts: 1,648
SANTOS, BR
Pontual Offline
Pontual  Offline
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Posts: 1,648
SANTOS, BR
One thing I feel is that, with milege piling up, the shifting smoothness decai, same with Viscosity Index Improvers in the oil ... or the ZDDP depletion. I belive that's a close relation between the shearing of VII and the smoothing loss. Best oil for me was the Mobil 1 15w50 EP API SL (a car oil!), with (more) ZDDP additive added by myself. The silk shifting went for longer time.

Re: Oil's affect on motorcycle gear shift feel? [Re: digitalSniperX1] #3842291
09/03/15 09:56 PM
09/03/15 09:56 PM
Joined: Aug 2012
Posts: 3,041
Cincinnati
donnyj08 Offline
donnyj08  Offline
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Posts: 3,041
Cincinnati
My FZ6R is a Notchy bike as most Yamaha's are. Ive ran M1 10w40 4T and Amsoil 10w40 Metric in the bike.

1-2 is cluncky on both oils, but it does shift smoother going up from 2nd with the Amsoil.

After the 1st 100miles it seemed the same. the next time i rode it was noticeably smoother with the Amsoil.

Last edited by donnyj08; 09/03/15 09:58 PM.

2008 Silverado Z71 LT 90k Maxlife FS 5w30
2010 Ford Escape 172k QSUD 5w20
2016 Yamaha XSR900 12k, Rotella 15w40 Yamaha Filter.
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