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Old 05-11-2009, 01:27 AM   #1
Optimus Prime
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Wrong engine oil.........

I recently did an oil change on my 1993 gsxr 750. One of my buddies has a 2007 vfr. He recommended that i put rotella 5w-40 synthetic, so i did. I was then told by a mechanic that that is not good at all. Obviously a vfr and a gsxr are different engines, but y is that oil ok for a vfr and not a gsxr. Is it bcuz its a v-4.
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Old 05-11-2009, 01:32 AM   #2
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it could be a number of reasons. you should have asked that guy "why?"
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Old 05-11-2009, 01:36 AM   #3
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I was told that that type of oil has totally different composites than regular motorcycle oil. I plan on changin it next weekend. I was told to use motul. Its suppose to be good oil.
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Old 05-11-2009, 07:24 AM   #4
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There are lots of people who run that oil with no problems.
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Old 05-11-2009, 07:35 AM   #5
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Some bikes may have problems with clutch slippage and or rough shifting. If you're not experiencing any problems, I wouldn't worry about it
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Old 05-11-2009, 08:06 AM   #6
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Ive tried a few different oils, the rotella 5w 40 has felt the best in the bike BY FAR. If you aren't having issues, don't worry.
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Old 05-11-2009, 08:06 AM   #7
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I have a friend that just graduated MMI anf he said they recomend rotella in most all bikes, I think most people look too deep into oils, I think as long as U use a name brand oil and change it often enough then U should never have an oil related problem, but on the other hand some mc specific oils do make them shift smoother, so what U gonna do? I have used castrol gtx in bikes forever and never had a problem, also doesent really need to be changed every trackday, should be good for several, 1000 - 3000 miles street riding, just my .02, of course opinions are like a holes everybody has one
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Old 05-11-2009, 08:12 AM   #8
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+1 to everyone on here. Lots of people run reg oil and have no problems. Its a honda they dont even require oil do they......lol
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Old 05-11-2009, 08:20 AM   #9
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Run any oil you want!
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Old 05-11-2009, 09:39 AM   #10
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hydraulic oil FTW!
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Old 05-12-2009, 10:23 AM   #11
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The rating on oil. which may work best for some bikes and not others is due to the viscosity rating. ex:5w-20-- 5w =meaning the oil's viscosity @ start up/ 20= the oil's viscosity @ running temp. basically the thickness off the oil can effect how engine/gears/clutch act upon how thick the oil is.

ex:
5W-20- waterlike viscosity
70W-80- (differential oil) syruplike viscosity (alot thicker)

hope that helps u understand.

oil rating really only gets critical in competion use(drag racing, track/etc)
you want the least amount of resistance(friction) that the engine has to run on, but the (thin)lighter the weight of an oil thus will not disipate heat as quick--again competion use. on street u should be fine ur not running the bike @ a consistant high RPM's & high heat loads
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Old 05-12-2009, 10:31 AM   #12
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I run the Rotella synthetic in my RC. I think the problem with clutch slippage is caused by the synthetic oils or low friction oils, for example I cannot use it in my 91 DR650 because the clutch will slip.
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Old 05-12-2009, 10:43 AM   #13
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Quote:
Originally Posted by Optimus Prime View Post
I recently did an oil change on my 1993 gsxr 750. One of my buddies has a 2007 vfr. He recommended that i put rotella 5w-40 synthetic, so i did. I was then told by a mechanic that that is not good at all. Obviously a vfr and a gsxr are different engines, but y is that oil ok for a vfr and not a gsxr. Is it bcuz its a v-4.
Your bike is oil cooled it the VFR is water cooled..
Huge difference!!!
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Old 05-12-2009, 11:24 AM   #14
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^^^
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Old 05-12-2009, 12:13 PM   #15
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i tried the rotella . my bikes are one of the few rarities that had issues with it.

both bikes just slipped like clutch had 8 years worth of worn plates in there. disposed oil, refilled with tried and true oil...back to normal shortly there after.

nothing against rotella, i just couldnt use it.
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