Recent Topics
'98 Mercedes E300TD Rotella T5 10W-30 5k miles
by KenO
16 minutes 25 seconds ago
Premium guard oil filters
by Jaha24k
42 minutes 6 seconds ago
76 super motor oil- synthetic blend 5w-30
by Jaha24k
44 minutes 29 seconds ago
Who makes the Mopar 5038041AA filter?
by Quattro Pete
56 minutes 22 seconds ago
Ruger Mini-14, yay or nay?
by 28oz
Today at 03:51 PM
USPS long long delivery to BlackStone Labs
by Pajero
Today at 02:58 PM
House A.c. vent leaking water
by motor_oil_madman
Today at 02:55 PM
"synthetic" gear oil and LS additive?
by nthach
Today at 01:54 PM
Supertech wix ST8 5514 miles
by jakewells
Today at 01:38 PM
Review - Sonax Spray and Seal.
by PimTac
Today at 01:36 PM
Lets Get a True Group 4 Sticky going!
by KMJ1992
Today at 12:17 PM
Rotella 10W40
by jakewells
Today at 10:43 AM
Extend WiFi Range at the Laptop?
by clarkflower
Today at 10:40 AM
Silicone containing waxes
by mjoekingz28
Today at 09:44 AM
Matrix totaled
by circuitsmith
Today at 08:32 AM
Door rust problems
by Dave Sherman
Today at 07:51 AM
2016 Honda Civic problems
by dbias
Today at 07:39 AM
Royal purple 75-140 in a subaru rear
by 91camarosRS
Today at 07:32 AM
OCI. With short trips. Nissan 4 liter
by Gawardawg
Today at 06:52 AM
Approach Watching on the Beach @ St Maarten ...
by LoneRanger
Today at 06:41 AM
Newest Members
JustaDude, 3horseman, Firedog45, WtsTacoma01, Orion62
65265 Registered Users
Who's Online
90 registered (2oldtommy, 46Harry, 28oz, 330indy, 10 invisible), 1667 Guests and 33 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
65265 Members
67 Forums
285605 Topics
4766343 Posts

Max Online: 3590 @ 01/24/17 08:07 PM
Donate to BITOG
Page 1 of 2 1 2 >
Topic Options
#4665582 - 02/14/18 09:08 AM Water cooled bike and 5w-30 Syn oil?
ZZman Offline


Registered: 03/17/08
Posts: 5775
Loc: Michigan
Any reason why a water cooled bike couldn't just use a 5w30 instead of a 40 weight? Would the lighter oil possibly yield better power and mpg?
_________________________
2003 Mercury Grand Marquis. Rotella T6 Multi-Vehicle oil
2008 Sebring Hardtop convertible. Rotella T6 Multi-Vehicle oil
2006 Kawasaki Vulcan 900 LT. Amsoil Metric 10w-40

Top
#4665586 - 02/14/18 09:14 AM Re: Water cooled bike and 5w-30 Syn oil? [Re: ZZman]
Nitronoise Offline


Registered: 03/24/10
Posts: 488
Loc: Chicago Suburbs
does your bike have a shared sump for engine and trans ,

I run 5W40 Rotella in my gold wing

30 might sheer down to real thin with the oil running through the trans and clutch

MPG"s?? I never cared my bike is fun time not worried about mpg's bring on spring to start the riding season
_________________________
07 Ford Freestyle 135K
04 Hyundai Sonata 280K
03 Hyundai Santa Fe 165K
02 Ford Tarus 98K
00 Buick Regal SC 135K
95 Goldwing 28K


Top
#4665587 - 02/14/18 09:14 AM Re: Water cooled bike and 5w-30 Syn oil? [Re: ZZman]
ironman_gq Offline


Registered: 04/30/14
Posts: 604
Loc: MN
Does this bike share a sump with the transmission? Motorcycles and similar motors tend to be pretty hard on oil and shear them down pretty quick.

Top
#4665679 - 02/14/18 10:57 AM Re: Water cooled bike and 5w-30 Syn oil? [Re: ZZman]
Reddy45 Offline


Registered: 08/15/08
Posts: 2963
Loc: USA
The water cooled bikes I've owned have all run HOTTER than the air-cooled ones. Combine this with a shared sump and the 40wt was more than justified.

Top
#4665849 - 02/14/18 01:33 PM Re: Water cooled bike and 5w-30 Syn oil? [Re: ZZman]
jeff78 Offline


Registered: 06/06/17
Posts: 129
Loc: New York
While I don't disagree with the concerns about shear, it's interesting to note that Honda has recommended 10W-30 for many of their bikes for a good number of years now.

Top
#4665940 - 02/14/18 03:11 PM Re: Water cooled bike and 5w-30 Syn oil? [Re: ZZman]
Nitronoise Offline


Registered: 03/24/10
Posts: 488
Loc: Chicago Suburbs
mine has been 10-40 by the owners man,,, i went to rotells t6 3 years ago not an issue with clutch or tranny runs like a champ......

quiet as a church mouse
_________________________
07 Ford Freestyle 135K
04 Hyundai Sonata 280K
03 Hyundai Santa Fe 165K
02 Ford Tarus 98K
00 Buick Regal SC 135K
95 Goldwing 28K


Top
#4666090 - 02/14/18 05:49 PM Re: Water cooled bike and 5w-30 Syn oil? [Re: jeff78]
hpb Offline


Registered: 08/28/14
Posts: 1209
Loc: Tasmania, Australia
Originally Posted By: jeff78
While I don't disagree with the concerns about shear, it's interesting to note that Honda has recommended 10W-30 for many of their bikes for a good number of years now.


Yep. My Honda NC750 is spec'd for 10w30. I've also run it on 5w30, and it's currently using a 10w40. Honestly, not a bit of difference between them in power or economy, and it's a pretty underpowered bike, so I'd notice any extra HP. If anything, the 10w40 gives a smoother gear change.
_________________________
MY16 Mitsubishi Outlander 2.2 diesel, 45,000km - Castrol 5w30
2006 Ford Falcon 4.0, 132,000km - Penrite Vantage 15w40, Ryco filter

Top
#4666109 - 02/14/18 06:27 PM Re: Water cooled bike and 5w-30 Syn oil? [Re: hpb]
David_g Offline


Registered: 07/22/11
Posts: 143
Loc: California
Horsepower differences are there but quite small in this report:
http://www.eatonbalancing.com/2015/02/01/oil-viscosity-and-its-effect-on-engine-power/

It's an automotive V8, but still might apply. I wouldn't choose an oil grade for my bike to increase power.

I've been using 10W30 in my shared sump Honda because it's the only recommended grade. But when I was preparing to depart on a roadtrip last September and it was 110-111F, concerns about my gearbox health operating in temps that hot with oil that thin were one factor in my decision to switch bikes--the bike I took was running 15W50, and FWIW reported an ambient temp as high as 116F during the 1st leg of the trip. I was glad I didn't take the Honda. I can hardly wrap my mind around 10W30 protecting the gearbox in normal temperatures, but still I had been following Honda's recommendation.

I think that Honda will be getting 10W40 next oil change. Motul 5100 probably because I got a gallon on sale recently, though I have almost enough Mobil 1 4T in the garage, and I think that lasts longer.


Edited by David_g (02/14/18 06:29 PM)
_________________________
2007 BMW R1200R (Mobil 1 15W50, Red Line Shockproof Heavy, Supertech 75W90)
2016 Honda Africa Twin DCT (Motul 5100 10W40)

Top
#4666111 - 02/14/18 06:30 PM Re: Water cooled bike and 5w-30 Syn oil? [Re: ZZman]
Linctex Offline


Registered: 12/31/16
Posts: 6148
Loc: Waco, TX
Super Tech and Traveler 15W-40 went for 84,000 miles in my 1999 Suzuki Marauder!
_________________________
"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."

Top
#4666250 - 02/14/18 08:51 PM Re: Water cooled bike and 5w-30 Syn oil? [Re: Linctex]
David_g Offline


Registered: 07/22/11
Posts: 143
Loc: California
Originally Posted By: Linctex
Super Tech and Traveler 15W-40 went for 84,000 miles in my 1999 Suzuki Marauder!

That's a long OCI!
_________________________
2007 BMW R1200R (Mobil 1 15W50, Red Line Shockproof Heavy, Supertech 75W90)
2016 Honda Africa Twin DCT (Motul 5100 10W40)

Top
#4666436 - 02/15/18 06:03 AM Re: Water cooled bike and 5w-30 Syn oil? [Re: ZZman]
alarmguy Offline


Registered: 07/10/12
Posts: 2147
Loc: South Carolina
Originally Posted By: ZZman
Any reason why a water cooled bike couldn't just use a 5w30 instead of a 40 weight? Would the lighter oil possibly yield better power and mpg?


Yes, not to be funny but the manufacturer knows why way better then us. :o)

But serious, coolant temperature is not as relative to oil temperature as people think.
If your coolant is 220 degrees your oil can easily be 250.
All engines different but the manufacturer knows what is best, also why I dont know of many bike manufacturers that recommend a 5w/.. oil.

Warm weather riding I always ran 20w50 in my water cooled Vstar 1300, much better shifting once the oil got hot. Winter I would run 15w40.
The lowest viscosity recommended oil for that bike is 10/40, its for a reason.


Edited by alarmguy (02/15/18 06:08 AM)
_________________________
14 Road King (current)
08 VStar 1300 Tourer
07 Suzuki C50

Top
#4667304 - 02/15/18 10:23 PM Re: Water cooled bike and 5w-30 Syn oil? [Re: ZZman]
AVB Offline


Registered: 05/20/12
Posts: 1282
Loc: Georgia
Isn't all 5w30 labeled as energy conserving? Every bike (wet clutch) I have seen said to avoid energy conserving oils.

Top
#4668890 - 02/17/18 03:59 PM Re: Water cooled bike and 5w-30 Syn oil? [Re: ZZman]
bulwnkl Offline


Registered: 02/09/05
Posts: 1741
Loc: Arizona
Don't know about the 5W30, but if you want to go for broke, Red Line's 0W20 is frictionally compatible with the JASO MA spec. (-;

Top
#4668909 - 02/17/18 04:27 PM Re: Water cooled bike and 5w-30 Syn oil? [Re: ZZman]
hpb Offline


Registered: 08/28/14
Posts: 1209
Loc: Tasmania, Australia
The 5w30 I used in my Honda was Penrite, met JASO MA spec, so not Energy Conserving.
_________________________
MY16 Mitsubishi Outlander 2.2 diesel, 45,000km - Castrol 5w30
2006 Ford Falcon 4.0, 132,000km - Penrite Vantage 15w40, Ryco filter

Top
#4671496 - 02/20/18 12:19 AM Re: Water cooled bike and 5w-30 Syn oil? [Re: ZZman]
AVB Offline


Registered: 05/20/12
Posts: 1282
Loc: Georgia
I did a search, but I can't find a Penrite 5w30 that meets JASO MA. I am not saying that you are mistaken, I just wanted to read up on it but can't find anything.

Top
Page 1 of 2 1 2 >