Gen 5: 2016 -> Oil Type (race bike) Clarification - Page 2 - Kawasaki ZX-10R.net
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post #11 of 19 Old 07-31-2017, 09:16 PM
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post #12 of 19 Old 08-01-2017, 08:06 AM
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Why would this particular engine HAVE to run on conventional oil? That makes zero sense. Also using Kawasaki Oil and Filters, keeping receipts and a log, will go a long way towards warranty work. Although If you have flashed your ecu like 99% of us, you might as well forget that.

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post #13 of 19 Old 08-01-2017, 03:58 PM
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Originally Posted by obijack View Post
Why would this particular engine HAVE to run on conventional oil? That makes zero sense. Also using Kawasaki Oil and Filters, keeping receipts and a log, will go a long way towards warranty work. Although If you have flashed your ecu like 99% of us, you might as well forget that.

I purchased a spare ecu for this reason alone lol.


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post #14 of 19 Old 08-01-2017, 04:41 PM
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I generally refrain from participating in oil threads of any kind, but I will quickly throw out what I know about some pertinent details.

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Originally Posted by dricked View Post
I use Lucas Oil and I noticed my engine is quite all weekend where as by Sunday morning it was quite noisy using 300V. I'm yet to replace a clutch using either oil.
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Originally Posted by obijack View Post
Maxima Extra4 and Motul 300v are ester products and are arguably the highest quality motorcycle oil on the market.

Both of you are right. What they don't tell you is the best possible protection under race conditions generally means that the engine oil doesn't last as long and requires more frequent changes or you will experience exactly what dricked describes. Most people just aren't astute enough to observe the changes in the engine and/or transmission feel or engagement to realize that the oil is going off etc.


Back to the idea that the clutches require Conventional oil over Synthetic. This is both true & false depending on where & when you get the info. Because motorcycle engines share their oil with the transmission there are special friction modifiers required in motorcycle specific oil. The amount and type of those friction modifiers which are much more prevalent in Synthetic engine oils can lead to problems with clutch slippage depending on the type of modifier and the type of organic friction plates. This was a very big problem about 10-15 years ago because all the sudden bikes started coming off the showroom floor with 130-145 rwhp etc and it exacerbated those types of slippage conditions with more & more hp being available. Back then Molybdenum was added to a lot of Full Synthetic oils and was a well known killer of motorcycle clutches. Since then most reputable motorcycle engine oil manufacturers have taken steps to avoid those kinds of issues by changing their formulas and we are also seeing better friction plate designs to cope with the higher & higher horsepower machines we get to enjoy. The bottom line is the stories of failures from many years ago persist and in some cases still happen today so you get the perpetuation of warnings still being dangled over new buyers at dealerships.

It's very similar to when fuel injection first came on to the scene and all the old timers that had been working the parts counters at the dealerships for 40 years were still telling new bike owners that their bikes were too lean from the factory and needed to be ran richer (like they used to be back in the 70's & 80's with carbs) when the truth was most bikes were already too rich from the factory to compensate for the EPA's 1993 clean air act where they started testing for trace elements in exhaust gases and a rich mixture would hide a lot of those hydrocarbons etc during testing.
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post #15 of 19 Old 08-02-2017, 08:32 AM
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Thanks @LDH; I use maxima pro+ or Motul 7100 in my gsx-s1000 because it is my street bike. And I use the race oil in the gen 5 because it is my track bike. I remember hearing that a while back about the race oils. Good info.

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post #16 of 19 Old 08-02-2017, 11:23 AM Thread Starter
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Thank you LDH for your honest and unbiased response, along with some good information on where these ideas may have sprouted from.

I've already ordered up the Kawi-branded full synthetic. The price is reasonable enough I can change it as often as I feel the need (which is fairly frequently on the race bike).

My GSXR I noticed a difference in oils. It loved the Repsol oil when I could still get that. It did fine on the Motorex, but it is not a fan of the Mobile 1, which I've used a grand total of twice in that bike just for that reason. That bike clearly has a preference at least with how I ride on the street. I will find it interesting to see if the replacement engine (from another bike) prefers similar oil to the original.

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post #17 of 19 Old 08-02-2017, 02:45 PM
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Im doing tack days.... how many track days per oil change do you recommend
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post #18 of 19 Old 08-02-2017, 04:24 PM
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Im doing tack days.... how many track days per oil change do you recommend
It really depends on a lot of things. If you really want to know how your oil is standing up to the trackdays and street miles you need to get it tested via a reputable laboratory like https://www.blackstone-labs.com/ its only $25-35 to get a UOA and they will help you work on a correct oil change interval. More often is better of course, but you won't know how long is too long without a UOA.

Here are my past UOA's for some of mine/friends bikes/vehicles/motors. https://drive.google.com/drive/folde...G8?usp=sharing
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post #19 of 19 Old 08-02-2017, 05:12 PM
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Quote:
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Im doing tack days.... how many track days per oil change do you recommend
My oil is changed after each race weekend which is 6 40min sessions (a bit less but close enough). You could probably go longer. If I were on a stockish motor I'd pick a decent affordable oil and change it every track day. Skip the syn and longer drain intervals.
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