full synthetic oil - Steve Saunders Goldwing Forums

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post #1 of 15 (permalink) Old 11-03-2009, 11:36 PM Thread Starter
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what are the views on using full synthetic oil in a bike with a wet clutch , will it cause it to slip ? dose it really give you any better engine protection for the price ? i have always just used good conventional oil andi keep it changed regularly ...

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post #2 of 15 (permalink) Old 11-04-2009, 12:10 AM
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Moonshiner there are lots of opinions on this site about Synthetic vs Petroleum based oils. Just do a search on Synthetic or Mobile 1 or Rotella etc and you will find many many threads with lots of opinions.

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post #3 of 15 (permalink) Old 11-04-2009, 03:50 AM
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For normal riding regular Motorcycle oil will do you just fine. If you are doing some high mileage stuff with lots of hot summer days synthetic is an option. I think if you keep the oil changed by service guidelines, you should not have any problems. Do stay away from the energy saving oils though.

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post #4 of 15 (permalink) Old 11-04-2009, 07:07 AM
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moonshiner wrote:
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what are the views on using full synthetic oil in a bike with a wet clutch , will it cause it to slip ? dose it really give you any better engine protection for the price ? i have always just used good conventional oil andi keep it changed regularly ..
Using synthetic oils will not make your clutch slip. According to the manufactures, using oil with energy conserving additives may cause clutch slippage.

There are many full synthetic oils that are marketed specifically for motorcycles with wet clutches. I have used both automotive and motorcycle specific synthetics with no ill effects. I have followed the manufactures recommendation, and have not used any oil with the "Energy Conserving" label.

Synthetic oils do offer superior lubrication properties. But do the conditions that require this level of protection exist in a typical engine. I know of no one that has done regular oil changes with conventional oil that ever had a oil related failure.

Is synthetic oil worth the cost? That's a question that I suspect will be debated forever.


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post #5 of 15 (permalink) Old 11-04-2009, 08:09 AM
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I use Amsoil 10W40 full syn with my wet clutch and have no problems what so ever. The tranny shifts smoother, the clutches do not slip and the engine runs cooler. As long as the synthetic oil you choose doesn no have friction reducers in it you should be fine.

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post #6 of 15 (permalink) Old 11-04-2009, 06:53 PM
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.... was your bike designed for it?...
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File Type: jpg Oil Molecule Size .jpg (57.7 KB, 92 views)
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post #7 of 15 (permalink) Old 11-04-2009, 08:28 PM
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I've used synthetic oil in both my Goldwings. The only reason I do it is because it feels better in the shifting. That's the only difference I can tell.

I've used all kinds of oil, almost always the choice based on how much money was in my pocket at the time. The only difference is in the shifting.

Some synthetics don't feel any better than the conventional oil. Amsoil always felt the best, but the price got too outrageous. Now I use Mobil 1 that I get at Wal-mart.

The only time I ever had a problem was when my clutch was worn out and ready to fail. It started slipping and I switched back to conventional and it bought me some time. After I put in the new clutch, I went back to synthetic.







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post #8 of 15 (permalink) Old 11-04-2009, 08:34 PM
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CaptainMidnight85 wrote:
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.... was your bike designed for it?...
I don't understand what point the picture is trying to make? Is it saying that the space between the rings and the cylinder walls is exactly one molecule in diameter? Otherwise the picture looks to me like the synthetic oil is better at filling in small gaps and therefore provides better lubrication.



I have never heard of a Goldwing engine wearing out from using cheap oil vs expensive oil. I don't think that the use of conventional or synthetic is going to make a significant difference in the wear of the engine. I could be wrong and there may be cases out there, but I think that it'sreally a case synthetic beingoverkill, and providing more protection than the bike really needs.

In my case, if it didn't seem to make a difference in the shifting, Idon't think I would do it.





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post #9 of 15 (permalink) Old 11-04-2009, 08:55 PM
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Dubswing wrote:
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I use Amsoil 10W40 full syn with my wet clutch and have no problems what so ever. The tranny shifts smoother, the clutches do not slip and the engine runs cooler. As long as the synthetic oil you choose doesn no have friction reducers in it you should be fine.

Bernie
+1. Same here.

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post #10 of 15 (permalink) Old 11-04-2009, 09:19 PM
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CaptainMidnight85 wrote:
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.... was your bike designed for it?...
I'm really curious, what's your source for the molecule size info?



Jeff

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