Sorry for another oil thread. - Page 4 - KawiForums - Kawasaki Motorcycle Forums
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post #31 of 56 (permalink) Old 12-05-2015, 09:40 AM
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I tried the Rotellas, without any mixing.


Rotella T6 5W-40 Synthetic: OK shifting, OK clutch feel, then the shifting got worse at about 1,500 miles for my 2002 Honda 4-speed transmission. It might be a very good choice for a better quality transmission (it really acts more like a semi-synthetic) , but I question its quality for lasting for many miles based on my experience with it. The calsi.com guy ranks it very high, along with Mike Guillory:

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Motorcycle Motor Oil
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Rotella T3 15W-40: Poor shifting smoothness from day 1, great clutch feel. I still use about half of this oil for its great clutch feel.


Time and trouble for oil mixing is almost none- for my ZZR600, I buy 2 quarts of Valvoline 20w-50 synthetic motorcycle oil and a gallon jug of Rotella T3 15w-40 at the local Walmart.


I add the quarts of synthetic to the crankcase first, then I add the Rotella and use the remaining Rotella for my other motorcycle (also mixed with one or two quarts of the same Valvoline Synthetic) and for my lawnmower.


The oil is mixed by the engine running after changing it. My 1988 design Honda cruiser only gets 1 quart of the synthetic and the rest the Rotella 15w-40 regular.
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post #32 of 56 (permalink) Old 12-05-2015, 10:49 AM
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Yeah, I was just playing around about mixing oil. I won't use Rotella T6 anymore for the same reasons you stated but many still swear by it. I just use the Rotella T Triple and call it a day. I haven't had it in the 650 for very long but the ZX seems to like it just fine.

2009 Black 650R
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post #33 of 56 (permalink) Old 12-06-2015, 07:39 PM
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I can't argue with the mixing of oil but I sure can't understand why anyone would take the time and money to try it
What if it's wrong?
What if it screws your bike up?
You're playing oil engineer and the outcome is really unknown.
If rotella T6 gets quircky with shifting after 1500 miles, it's cheap to just change it. We're talking 20 bucks for a gallon of full syn oil.
Why make it complicated?
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post #34 of 56 (permalink) Old 12-06-2015, 07:46 PM
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Almost 1500 views for just another oil thread.
We all get sucked in to the same ol thing.
and not one common denominator

Last edited by 185EZ; 12-06-2015 at 08:46 PM.
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post #35 of 56 (permalink) Old 12-07-2015, 07:48 PM
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"Why make it complicated?"

Because I was not happy with any of the oils that I tried- poor shifting, poor clutch feel, or too expensive.

I think I get the best of both worlds with my semi-synthetic mix, and if oil mixing was a problem, every time someone switched to a new oil, the remaining old oil in their engine would cause a problem.

I have used a mix the last 10 years, and I plan on using a mix for the next 40 years (I will be 96 then). I like that I can tell if the oil is just starting to fail by how the transmission shifts, for my motorcycles.

For my cars, I do not mix oil. I buy Valvoline MaxLife (a semi-synthetic), and my wife takes hers to the dealer for the recommended synthetic oil every 5,000 miles (for a 2013 Mazda still under warranty).
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post #36 of 56 (permalink) Old 12-07-2015, 08:21 PM
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that's really complicated
you mix oils for your bike but don't go by the Ferrari forum of mixing oil for your car and you use semi synthetic oil (complete waste of money) for one car and full syn for another car.
What type of cooking oil do you use or do you mix canola with olive oil?
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post #37 of 56 (permalink) Old 12-07-2015, 08:22 PM
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Quote:
Originally Posted by William View Post
Getting back to the start of my thread, I mentioned that if I stick
with regular oil I might try Kawasaki 10W-40 reg. motorcycle oil.
Nobody mentioned anything about the Kawa. oil if I recall
correctly? Wouldn't that oil be formulated perfectly for Kawa.
engines?
after all this nonsense,
what did you decide on for oil?
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post #38 of 56 (permalink) Old 12-08-2015, 09:58 AM
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Kawasaki 10w-40 dealer oil- probably good, but way overpriced.

The source of their oil could change from year to year, depending on which oil company Kawasaki gets a new contract with, then you are mixing oil from the previous supplier, and some think mixing oil might make your engine have a shorter life (highly unlikely in my opinion, but your choice).
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post #39 of 56 (permalink) Old 12-08-2015, 11:24 AM
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The quote below is recent and for big gasoline engine trucks with high miles, but it at least somewhat also applies to motorcycle engines (Gasoline engines are gasoline engines, and diesel oil is rated for use in gasoline engines):
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“There's no hard-and-fast need to stick to the same oil. IMO periodically (not every oil change, maybe every couple of years) switching brands or formulations is probably a good thing- trade additive and detergent packages so the strengths and weaknesses compliment each other over time.”
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Of course, the very next post in that thread is from the “never mix oils or you might die“ crowd.

The last post in that thread:

"AFAIK there is no known issues from switching brands, some on here have no allegiance and only buy what's on sale, so every change is likely something different from last... "
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From:
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Switching oils on high mileage vehicles.... | Passenger Car Motor Oil (PCMO) - Gasoline Cars/Pickups/Vans/SUVs | Bob Is The Oil Guy
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Last edited by Jeff in Kentucky; 12-08-2015 at 11:30 AM.
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post #40 of 56 (permalink) Old 12-08-2015, 11:31 AM
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Less than 6 bucks is way over priced?
https://www.kawasaki.com/Accessories/Item/K61021202A
What does a quart of your oil end up being after mixing?
And I don't see anyone in this thread saying mixing oil shortens engine life.
Oils never actually "mix" together. And you don't know if the additives will counteract with each other or cause other problems.
Unless you're an oil engineer and had your witch's brew tested, it's wrong to give such advice in a forum when it isn't proven other than your own judgement
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