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Old 04-18-2005, 07:35 AM   #21
bmwclay
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Default Re: Synthetic oil for older inlines ?

Because of the added friction modifers synthetic oil can cause clutch sllping. Mobil says that on their web site. That's why they have the inline four oil (unit gearbox) and their V-Twin oil (separate gearbox).
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Old 04-18-2005, 07:39 AM   #22
sarnali
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Default Re: Synthetic oil for older inlines ?

They're still selling full syn. 15w50, they just changed the packaging. Now it's gold cap
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Old 04-18-2005, 07:40 AM   #23
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Default Re: Synthetic oil for older inlines ?

The ST got a great write-up in Rider this month, as did the Tiger a few months ago.



I'm still hot for a T100 in tangerine and white.
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Old 04-18-2005, 08:19 AM   #24
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Default Re: Synthetic oil for older inlines ?

I used to use Mobile Delvac 1 when I bought my SV-650, it is as good as Mobile 1 but usually MUCH cheaper. I was always able to find it much cheaper at truck stops.



Not sure if this still holds the same as on this site I found it looks a lot more expensive then when I used to buy it. (scroll towards the bottom)

http://motorcycleinfo.calsci.com/Consumables.html
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Old 04-18-2005, 08:37 AM   #25
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Default Re: Synthetic oil for older inlines ?

Yes, and McDonalds has a "Healthy Menu."

They say they do, but I somehow don't believe it.

I think Mobil will say anything that sells more oil.
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Old 04-18-2005, 09:35 AM   #26
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Default Re: Synthetic oil for older inlines ?

Or grubbing for handouts behind the local deli!
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Old 04-18-2005, 10:17 AM   #27
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Default Re: Synthetic oil for older inlines ?

Never talk about religion, politics, or oil.



I am a rotating equipment specialist with decades of experience with motorcycles and cars. Hot rod gearhead from the '60s. For motorcycles the two best choices are Rotella and Delvac. Both are diesel specific so they have extreme pressure additives that work very well in integral engine/transmission sets. Both are cheap and both will go 5,000 miles between changes (based on actual testing), even on well used engines.
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Old 04-18-2005, 11:15 AM   #28
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Default Re: Synthetic oil for older inlines ?

Well, that's why I said "to my knowledge." Thanks for the info. Years ago I used to work for a manufacturer. I don't remember that ever being a problem, but perhaps Mobil 1 has experienced it. We did have a motorcycle specific synthetic, but I don't remember if it had an additive/formulation to prevent that problem.
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Old 04-18-2005, 11:19 AM   #29
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Default Re: Synthetic oil for older inlines ?

wow i used to know twins named Rotella and Delvac. great personalities. the Tundra twins.
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Old 04-18-2005, 11:39 AM   #30
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Default Re: Synthetic oil for older inlines ?

This is a good point about the diesel oils but I'm not sure it's as significant as it may seem. Lubricants are actually overengineered, so I don't know how much differerence it makes to the average rider that changes his/her oil every four or five thousand miles. I think a little research is in order.



We used to sell a hi-performance motorcycle-specific oil, (and if I remember correctly, there was an additive package in it to address this problem) but the inside scoop was that our semi-synthetic and synthetic auto oils did just as good of a job.



In theory, it's probably true, but this kind of stuff can be a little overplayed to create more differentiation for the different product segments.
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