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Service manual favors 10W-30 oil
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Pauley Offline
Running Like a Top

SF Bay Area, CA
Posts: 626
Joined: Nov 2013
Post: #21
RE: Service manual favors 10W-30 oil
(04-07-2014 03:50 PM)HikerToo Wrote:  
(04-07-2014 08:55 AM)Pauley Wrote:  At my 600 mile service the dealer replaced with 10w30. At the next scheduled oil change, I'll do it myself and I am planning on using 10w40 synthetic.


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Honda's own full synthetic is 10w30.....

It gets over 100 F in the summer around here sometimes. 10W40 is better for the higher ambient temp ranges.
04-07-2014 07:28 PM
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dBuster Offline
Running Like a Top

La Crosse, WI
Posts: 611
Joined: May 2013
Post: #22
Re: Service manual favors 10W-30 oil
I think it is safe to say we all know the oil charts and what is better for different temperature ranges but it has been shown to be a fact that the mother ship Honda has deemed in their service manuals for our bikes that they recommend 10w30.

Now in Japan the temperatures do get up into the 90's and it is a tropical humid 90's, spent four years overseas and can confirm this. With the high humidity and 90 plus degree weather you would think they would recommend more than just the 30 weight oil but hey that is what they recommend.

Like I have said, each bike may look alike but each bike is different. Some may run just fine with 40 weight oil while others will gripe about it until you go back to 30 weight oil. If you can run 40 weight and your bike isn't making noises or that you don't notice as they may be so minor unnoticeable noises then go for it. I do believe this thread was just stating what the service manual calls for, or recommends when changing the oil in our bikes.

Now depending on what chart on what website you go to our what book you go to it is hard to say the differences on some. Here are just a few.

İmage

İmage

İmage

Note two of those charts you would be hard to tell the benefits of the 40 weight over the 30 weight but rather the 30 weight has a lower operating temp but on the upper end of the temperature scale it just points off the scale for both weights.

The point being, run the viscosity of oil you want to run, just bear in mind Honda recommended 10w30 and they must have had a reason to do so. If you run 40 weight and have no problems or noises I applaud your bike for being able to handle it and or your cam tensioner is adjusted or set properly....

Keep the wheels down and enjoy the ride!

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(This post was last modified: 04-07-2014 08:25 PM by dBuster.)
04-07-2014 08:19 PM
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The ferret Offline
Forum Moderator

Ohio
Posts: 31,282
Joined: Apr 2013
Post: #23
RE: Service manual favors 10W-30 oil
I really, really didn't want to get in on this, however when I was down picking up oil and filters the other day for my bikes I asked the Parts Manager (27 years as parts manager) about this and he said and I quote " Up until 2006 Honda recommended 10w40 weight oil for their bikes. Starting in 2007 Honda started recommending you use 10 W 30 in their bikes" then he pointed to the following Honda chart which I took a picture of and am posting below

İmage

So I said... so my ST is a 2006 and Honda wants me to use 10w40 but if it had been a 2007 ST it would call for 10W30? He said "Crazy huh?" I said yep!

So I bought a gal 10w40 for my 2006 ST (which is what I always used anyways) and a gal 10W30 for my 2014 CB 1100 as Honda recommends( which I used in my 13 anyways) plus 6 oil filters, an air cleaner for the ST, brakes all around for the ST etc

Americans are a stubborn bunch, as in "I've been using 20w50 synthetic dino oil in all my vehickles for 30 years and never had a problem" so keep on using any weight any type oil you have faith in, but Honda DOES "recommend" 10w30 for the CB 1100.(and all Honda motorcycles manufactured starting Jan 1, 2007)

.
Defender of the Realm
2014 DLX (the pleasure horse)
2021 NC750X DCT (Angry Bird)
(This post was last modified: 04-08-2014 05:04 AM by The ferret.)
04-08-2014 05:02 AM
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HikerToo Offline
Road Warrior

Delaware
Posts: 1,519
Joined: May 2013
Post: #24
RE: Service manual favors 10W-30 oil
Good info Ferret! Thanks for getting involved.
and for those living in hot areas, where temps are from 80 to 120 degrees in the summer, where one would normally use the thicker 10w40, I wonder if using full synthetic, which holds up better to heat and cold, would cover the extremes better so the thicker oil would not be needed anyway?
04-08-2014 05:27 AM
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Aussie Offline
1st Service Completed

Australia
Posts: 198
Joined: Jul 2013
Post: #25
RE: Service manual favors 10W-30 oil
These are going to be some pampered bikes eh? Smile
04-08-2014 06:34 AM
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OldF7Guy Offline
Running Like a Top


Posts: 746
Joined: Apr 2013
Post: #26
RE: Service manual favors 10W-30 oil
(04-08-2014 05:02 AM)The ferret Wrote:  I really, really didn't want to get in on this, however when I was down picking up oil and filters the other day for my bikes I asked the Parts Manager (27 years as parts manager) about this and he said and I quote " Up until 2006 Honda recommended 10w40 weight oil for their bikes. Starting in 2007 Honda started recommending you use 10 W 30 in their bikes" then he pointed to the following Honda chart which I took a picture of and am posting below

İmage

So I said... so my ST is a 2006 and Honda wants me to use 10w40 but if it had been a 2007 ST it would call for 10W30? He said "Crazy huh?" I said yep!

So I bought a gal 10w40 for my 2006 ST (which is what I always used anyways) and a gal 10W30 for my 2014 CB 1100 as Honda recommends( which I used in my 13 anyways) plus 6 oil filters, an air cleaner for the ST, brakes all around for the ST etc

Americans are a stubborn bunch, as in "I've been using 20w50 synthetic dino oil in all my vehickles for 30 years and never had a problem" so keep on using any weight any type oil you have faith in, but Honda DOES "recommend" 10w30 for the CB 1100.(and all Honda motorcycles manufactured starting Jan 1, 2007)

I dont want to get into this either but..... There has been a trend over the last 15 years or so to go thinner with everything. I think Ford and Honda cars were first with recommending 5w 20 and then Toyota and others have fallen in behind them for the most part with some exceptions. The thinner oil may be worth 1/10 of a mpg but they are looking for everything they can get.

This has been a hotly debated topic on a million forums. I subscribe to the the thicker is better crowd right or wrong. Remember, something like 15w 40 Rotella will shear down to a 30 weight anyway over time and a 30 weight will shear down to a 20-25 weight.

It probably makes zero difference if you run 10w30 or 10w40 as long as you change the oil and filter at reasonable intervals.

2003 Honda 750 Nighthawk
2013 Honda CB1100
04-08-2014 07:04 AM
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Red Mist Offline
Running Like a Top

USA
Posts: 390
Joined: Feb 2014
Post: #27
RE: Service manual favors 10W-30 oil
(04-08-2014 07:04 AM)OldF7Guy Wrote:  It probably makes zero difference if you run 10w30 or 10w40 as long as you change the oil and filter at reasonable intervals.
Done. I'm switching to 10W30 next oil change, which will be, like, tomorrow (just turned ~3,000 miles).

I take your meaning with the term "zero difference" to mean longevity of the engine; the 10W30 will allow the engine to spin a bit more freely and should provide a tiny bit of fuel efficiency over the heavier oil, so there is that benefit. Flows better.

Good info, differs a bit from what the owner's manual suggests, but the quality of lubricating oils is much better than it was 10 years ago, as with tires, and they tend to last longer and maintain viscosity better.

[i]Does anybody remember laughter?[/i]
-Led Zeppelin's Robert Plant ROFL
04-08-2014 07:20 AM
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CBXBob Offline
1st Service Completed

USA
Posts: 64
Joined: Nov 2013
Post: #28
RE: Service manual favors 10W-30 oil
The viscosity of 10W-30 and 10W-40 is the same at 0'F. THE FLOW RATES AT 210'F are close. Once an engine is started for a few seconds and oil flow is established it should not be of any consequence. The difference between whatever ambient temp and operating temp is far greater Note: the flow rates of 10W-40 at 210'F are greater than the flow rates of 15W-40 and 20W-40 At 210'F. I wasn't aware of that difference until I saw it in the SAE charts. Also the flow rates between 10W-30 and 10W-40 are close enough that a difference of 25'F at the high temps will result in the same flow rates of the oils. I have some experience working on motorcycle, auto, commercial equipment, and aircraft reciprocating and turbine engines for over 50 years ( I don't believe it either ) and am totally convinced that what ever noise phenomena owners are experiencing, are not oil viscosity or even oil brand related due the oil being new or relatively new. My WAG is a problem with or sticking in the in the balancer shaft weight damper rubbers .Other possibilities could be the Cam chain tensioner or the starter clutch. good Luck EVERYONE.
04-08-2014 03:41 PM
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ride4now Offline
High Mileage

Florida / Georgia USA
Posts: 1,413
Joined: May 2013
Post: #29
RE: Service manual favors 10W-30 oil
(04-06-2014 05:56 PM)ride4now Wrote:  As long as we're taking oil... as you may know I picked up a new Deluxe yesterday. This afternoon, after giving the bike it's first good coat of wax, I warmed it up, on the center stand for 5 minutes (per the manual), then let it cool for 3 minutes, then checked the sight glass...this is what I found...

İmage

Looks a little FULL doesn't it!

After draining out about 1/4 of a quart...maybe more...this is what I've now got...and it still may be too much.

İmage

I don't understand why the oil looks like it's on an incline...the bike was definitely level.
But this whole exercise was pretty annoying. At this point the bike had 28 miles on it.

Question, how does Honda ship these bikes? I have to believe they have oil in them so they can be started up off the line. But maybe not? Does the dealer do that? If so, they messed this one up. I'm glad I caught it. Too much oil is almost as bad as too little.


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UPDATE... I went back to the dealer yesterday to show them the photos and to ask how the bikes are shipped. The mgr told me that the bikes are shipped WET. I find that unbelievable but could explain why many of us have received bikes too full. He mentioned that the first thing 'he' does when he buys a new bike is to take it home, drain all of the oil, change the filter, then refill it with exactly what the manual calls for. He then changes the oil again at 200 miles, at 400, then again at 600. Seems like overkill to me. Thoughts??

‘22 BMW R1250 GSA
‘14 Honda CB1100 DLX
'09 Kawasaki KLR650
‘70 Kawasaki H1 500
04-08-2014 06:30 PM
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The ferret Offline
Forum Moderator

Ohio
Posts: 31,282
Joined: Apr 2013
Post: #30
RE: Service manual favors 10W-30 oil
Mine looks exactly the same and yes they come in wet. Im at 120 miles. Will probably go another 80, drain it and refill (no filter change) and then change both at 600.



Be sure and check your tire pressure too! 36 front 42 rear.

.
Defender of the Realm
2014 DLX (the pleasure horse)
2021 NC750X DCT (Angry Bird)
04-08-2014 06:42 PM
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