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"K13S/R" Technical Q&A K1200S/R Technical Questions/Answers

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  #1  
Old 03-31-2018, 04:29 PM
adg44 adg44 is offline
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Has the K1300 always called for 5w40 oil?

I seem to recall from my K1200S days that we used 10w40 oil, but I see the spec is now for 5w40. Anyone know the reason for the change?
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Old 03-31-2018, 06:14 PM
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Re: Has the K1300 always called for 5w40 oil?

I think it had something to do with the wet clutch and the clunk into 1st...itís been about 5 years now.
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Old 03-31-2018, 06:29 PM
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Re: Has the K1300 always called for 5w40 oil?

I owned a 1300GT for several years, and I always did my own maintenance.

One time I accidently got 10/40 oil rather than 5/40, as specified. I thought " what the heck, it can not possibly make a difference".

Well, for the most part it did not make a difference, except that for almost every startup from a cold engine the cam chain rattled. The bike had hardly ever rattled before, so the ratteling annoyed me so much that I changed the oil after a couple of months. Once the 5/40 oil was back in business the ratteling during startup stopped.
Both oils were high grade Castrol synthetic.
I can not guarantee that the oil made the difference, but if it didn't it sure was a weird coincidence.
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Old 03-31-2018, 06:48 PM
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Re: Has the K1300 always called for 5w40 oil?

I seem to recall my 2006 K12S used 10w-40 and my 2009 K13S was 5w-40. I always believed in sticking with what the factory recommends so I never bothered experimenting with other weights.
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Old 03-31-2018, 07:17 PM
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Re: Has the K1300 always called for 5w40 oil?

I believe the change was made in the k12s because the 10w40 oil did not properly lube the clutch plates when cold and they would squeal on takeoff. Due I think to poor oil feed to the wet clutch.
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Old 04-01-2018, 02:08 AM
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Re: Has the K1300 always called for 5w40 oil?

The captain is on it. The K12's did not have a well designed clutch basket and the lubrication was minimal. The first plate in the basket burned up, no oil. There is a clutch thread that describes other problems such as smooth steel plates rather than dimpled. Poor fitting basket needle bearings. Things line up and your clutch can suck. The K13's improved on things but in the mean time it was suggested to use 5W40 oil in an attempt to lube the clutch plate in question (and the rest of the darn thing). On my K13, I use oil that is not totally recommended.
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Old 04-01-2018, 11:20 AM
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Re: Has the K1300 always called for 5w40 oil?

Quote:
Originally Posted by Beech
On my K13, I use oil that is not totally recommended.
And what oil might that be, Beech??
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Old 04-01-2018, 12:19 PM
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Re: Has the K1300 always called for 5w40 oil?

If I have 10W40 on hand I use it.
I'm in the process of changing over to Motul 7100 though. Just put a load in my new S1000R. Not sure I'll use it in my K bike. Been using Castrol Power 1 5w40 for years. (new name now)
I know a lot of you like Motul 300, reading about it I find it really suits track oriented bikes. Oil thread...not. I am stopping unless we need to talk big twin bikes now.
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Old 04-01-2018, 12:28 PM
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Re: Has the K1300 always called for 5w40 oil?

Quote:
Originally Posted by adg44
I seem to recall from my K1200S days that we used 10w40 oil, but I see the spec is now for 5w40. Anyone know the reason for the change?

It’s a touch complicated!! I bought my K12 in 2009 UK dealers were still using 10/40 the clutch and gearbox issues are well documented what isn’t the early 1300 also came with its issues and by 2011 BM here in the UK went to 5/40 the problem then being the camchain tensioner wouldn’t hold the oil so one got the death rattle at start up and hence the tensioner recall which also covered early 13’s along with other things.

As for the clutch in those days I was really well connected and certainly got some preferential treatment and it took 2 more attempts to get it right but right it was in the end and 7 years on it’s perfect even better than my X/R and still on 5/40 and I can leave the bike for months and it starts with zero rattle to this day.
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Old 04-01-2018, 07:08 PM
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Re: Has the K1300 always called for 5w40 oil?

Interesting. OK, looks like I'll buy some 5w40. I had a gallon of 10w40 unopened from my previous bike, but I'll use the correct spec, especially as I'm under warranty.
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Old 04-01-2018, 08:02 PM
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Re: Has the K1300 always called for 5w40 oil?

Just try to imagine the very little tiny space between 2 clutch plates, it is very very very small
If the oil is cold, there will be a drag between these plates, hence the infamous CLUNK
Using a 5W rather than a 10W grade oil means that there will be less of a drag hence no clunk or at least, a lesser clunk.
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