Please Help!!! - Wrist Twisters
 
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post #1 of 10 Old 12-29-2006, 03:19 AM Thread Starter
 
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Please Help!!!

Hi everyone!!!
I have a major doubt here. I was advised to use ELF 100% Synthetic Engine Oil viscosity 10W-50 instead of the standard recommended 10W-40. Since I replaced the stock slip ons by a pair of Arrows at the same time I wonder if I did anything wrong (regarding the oil...) that might damage the engine.
Can anyone please help me please???
Thanks a lot!!!

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post #2 of 10 Old 12-29-2006, 04:02 AM
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which bike and at how many miles did you switch to synthetic?

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post #3 of 10 Old 12-29-2006, 04:06 AM Thread Starter
 
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Honda 919 and for the 2nd service, i.e. 5000 km.
What do you think? The Honda dealer was supposed to use Motul 100% Synthetic 10W-40.
Thanks a million for your help!

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post #4 of 10 Old 12-29-2006, 04:17 AM
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10w40 is recommended and you used 10w50, right?

This shouldn't be a problem and is largely determined by the environment you ride in and the type of riding you do.
example - Street riding in the arctic might warrant 5w-30 while racing in the Arizona desert might warrant 20w-50.

By using 10w-50 (versus 40) you're still starting a cold engine with oil rated at 10w (W means Winter) viscosity and as things heat up the 50 remains a little more viscous than the 40 - but under most conditions there isn't enough of a difference to cause a problem.

Are you experiencing a problem of some sort or just more generally concerned about the difference between 10w-40 vs. 50?

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post #5 of 10 Old 12-29-2006, 04:46 AM
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The reason 10w-40 is recommended over 10w-50 is the wet clutch. The 10w-50 will want to make the bike creep a little when idlling in first gear and the engine is cold. Synthic oils don't change much. Just be sure to use a motorcycle specfic oil. The sheer loads in the trans will break down automotive oils in a hurry. Good luck.

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post #6 of 10 Old 12-29-2006, 04:51 AM Thread Starter
 
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Hi Jetblast,
Thanks a lot for your reply. I was indeed concerned by the fact that the dealer did not recommend that oil but I didn't have any problems so far. In my country the temperature varies from 25 to 35 degrees celcius so the 10W part should be ok. The bike's behaviour changed with the new slip ons and I wondered if the oil had any involvement as well (have only had 50 km since those changes...). I can now go and ride my bike with a peaceful mind!!!
Thanks again Jetblast!!!

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post #7 of 10 Old 12-29-2006, 04:56 AM Thread Starter
 
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Cheers Fastbackdlm, the engine oil used is the Elf Motorcycle Synth and as a matter of fact the major "CLACK" when you put in first gear (it's been like that since new and apparently it's a typical 919 thing...) somehow reduced with the 10W-50...or new oil in general with the 5000km service.
Thanks a lot!

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post #8 of 10 Old 12-29-2006, 05:01 AM
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the "clunk" is normal, almost a Honda trademark.
ride on and enjoy!

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post #9 of 10 Old 12-29-2006, 02:30 PM
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I LOVE my "clunk"....

'02 Honda 919 - She's the only one for me!

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post #10 of 10 Old 12-29-2006, 10:42 PM
 
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if it ever stops clunking into gear you have a skrewed up tranny.

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