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Old 02-22-2013, 10:50 AM   #1
tnargs OP
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10W40 in RC8

Hi guys,

Mobil 1 Racing 4T 10w-40 is an oil I am thinking of using in my 06 990 Adv.

The manual says 10W-50 synthetic oil.

Would I be endangering my engine by using this particular very high grade 40-rated oil?

thanks for any help!
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Old 02-22-2013, 11:17 AM   #2
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I ran motul 300v in 5w 40. I wish I had run the 10w 50. When the bike gets hot(enough to turn on the fan) it becomes hard to find neutral. Next time I'm gonna use the 10w 50
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Old 02-22-2013, 11:34 AM   #3
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Quote:
Originally Posted by tnargs View Post
Hi guys,

Mobil 1 Racing 4T 10w-40 is an oil I am thinking of using in my 06 990 Adv.

The manual says 10W-50 synthetic oil.

Would I be endangering my engine by using this particular very high grade 40-rated oil?

thanks for any help!
Loose some blood and get help at the IR.
Then when they ask for Your blood type - Reply : RED!

Its just as bad. If anybody ever asks from me - oil is not the place to be cheap at.
If You ride only in medium climate and really novice pace - then the situation might not be so bad, but put the bike under stress in heat and under heavy hillclimb or so and the cheaper oil will become watery solution with foam in the motor and might cause wear and tear, that nobody needs...
Plus the weird noises and loss of "bloodpressure" ...
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Old 02-22-2013, 01:42 PM   #4
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Quote:
Originally Posted by tnargs View Post
Hi guys,

Mobil 1 Racing 4T 10w-40 is an oil I am thinking of using in my 06 990 Adv.

The manual says 10W-50 synthetic oil.

Would I be endangering my engine by using this particular very high grade 40-rated oil?

thanks for any help!
You are probably not going to have any problems, unless you ride like a lunatic in very warm climates.
I believe a practical suitability test is oil consumption. If you notice increased oil usage in the way and temperatures you ride, then go 50, otherwise 40 will be good. I didn't notice any difference in my bike, but I always use 50 during the summer.
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Old 02-22-2013, 02:00 PM   #5
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The Mobil 1 MC oil comes in a 20/50 version as well.
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Old 02-22-2013, 04:26 PM   #6
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dont be an idiot.
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Old 02-22-2013, 06:06 PM   #7
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Originally Posted by Snowhite808 View Post
- oil is not the place to be cheap at.
... put the bike under stress in heat and under heavy hillclimb or so and the cheaper oil will become watery solution with foam in the motor ...

Just bear in mind that Mobil 1 is probably the best oil on the planet by a large margin.

That's why I am asking specifically about that oil.
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Old 02-22-2013, 06:59 PM   #8
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It'll be fine. But I always run synthetic 10w-50. Except when i run synthetic 5w-40. Or Dino 15w-40. Or something else. But hey, I barely have 60k miles on my bike, who knows when something could go wrong.
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Old 02-22-2013, 07:06 PM   #9
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i use belray EXL 10w-40 & the RRP has dropped $20Aud ($60 to $40) were i buy from
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Old 02-22-2013, 07:18 PM   #10
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The 10W-40 should be fine, unless the ambient temps are unusually high. Just don't compromise on the other end of the oil specification. I believe the RC8 is a plain bearing motor and the camshafts ride on a thin film of oil that flows through a very small machined groove in the heads. If the oil you run is too heavy...say, 20W-50, you could seize a camshaft from insufficient lubrication. The heavier grades just don't flow well enough through small passages.
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Old 02-22-2013, 07:51 PM   #11
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+2 I run Mobil 1 Racing 4T 10w-40 in my KTM 950SE, 450XCF and my Kawasaki 1200. WalMart has the best price on Mobil 1 Racing 4T 10w-40, $9.00 qt.
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Old 02-22-2013, 08:05 PM   #12
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Quote:
Originally Posted by tnargs View Post
Just bear in mind that Mobil 1 is probably the best oil on the planet by a large margin.

That's why I am asking specifically about that oil.
Dear god i hope this is sarcasm...
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Old 02-22-2013, 08:15 PM   #13
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Dear god i hope this is sarcasm...
Dear God, please expand the knowledge base of the great unwashed out here
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Old 02-22-2013, 08:34 PM   #14
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Quote:
Originally Posted by tnargs View Post
Just bear in mind that Mobil 1 is probably the best oil on the planet by a large margin.

That's why I am asking specifically about that oil.
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Dear God, please expand the knowledge base of the great unwashed out here
Its a just a huge statement that cant be backed up. And to say it is the best on the planet by a large margin...that right there is insane. I would argue up and down that there are many oils better than mobil 1.

The only oil i dont like is Mobil 1 5w-30 (it sheers and if i can find them i can show you the oil analysis')
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Old 02-23-2013, 01:00 AM   #15
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Originally Posted by BarkSlayer View Post
The 10W-40 should be fine, unless the ambient temps are unusually high. Just don't compromise on the other end of the oil specification. I believe the RC8 is a plain bearing motor and the camshafts ride on a thin film of oil that flows through a very small machined groove in the heads. If the oil you run is too heavy...say, 20W-50, you could seize a camshaft from insufficient lubrication. The heavier grades just don't flow well enough through small passages.
Very instructive reply, thanks for the information mate.

Regarding my sanity in saying Mobil 1 is a standout product: sorry I did not mean to offend and I am not an oil expert, but I have twice seen oil test results and both times Mobil 1 made all other products look silly. So I post what I think I learned.

Very, very happy to be proven wrong.
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