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Old Today, 12:30 PM   #1
Dogi OP
Joined: Apr 2014
Oddometer: 22
10w50 vs. 10w60 fullsynth motor oil

So I asked my mother-in-law to bring me a bottle of... motor oil. Motorex Cross Power 4T 10W60 fully synthetic to be exact. And she brought me a bottle of.. almost what I asked for. Only that I got 10W50 instead of 10W60.

I have a brand new bike, KTM 690 SMC R -14, about 100 miles on the clock now. First service is at 1000 km, but I thought that I'd do first oil (and filter) change at about 250 km. Actually I don't even fully know why.

Manual says that the oil I asked for is THE oil to use, and as an alternative, 10W50 (power synt, not cross power, for some reason) can be used.

Question is, what (potential) difference will using lower viscosity oil be for new engine at it's break in stage?
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Old Today, 12:35 PM   #2
I smell premix
dougfromindy's Avatar
Joined: Aug 2008
Location: Indpls, IN Lexington, MI
Oddometer: 1,958
oil thread

wow, run it.
Its not going to make any difference.
10w is nothing to be concerned about.
Especially at the higher end, hot end of scale.
One thing I believe in is NOT using a full syn oil for break-in ...
This is a time when you want wear, use a standard dino oil.
Opinions may vary, I believe an early oil change is not needed.
I would run whats in there until 1st service 1000km and then switch to full syn

dougfromindy screwed with this post Today at 12:40 PM
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Old Today, 12:48 PM   #3
So much to ponder
groop's Avatar
Joined: Jun 2007
Location: oc, ca
Oddometer: 2,867
Dang....I want a mother-in-law like yours
Originally Posted by DR. Rock
once you leave the pavement, it's like entering a parallel universe... a wormhole in both space and time... sometimes you won't believe you're still in the United States, or in this century.
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Old Today, 01:18 PM   #4
Enjoying my last V8
fritzcoinc's Avatar
Joined: Apr 2008
Location: Cypress, Tx
Oddometer: 6,118
I've used 5w - 50 in My Guzzi Sport for some 40K miles and I used 5W -50 in my Harley till 60K miles when I sold it. At operating temp. The two oils are very close in viscosity.
Good plan to change oil early. An early change gets all the break in metal too fine for the filter to catch out of the engine. Put a magnet on your filter to trap even more break in metal. Use magnet till about 3000 miles or so.

" break in fast to run fast soon. Break in slow for longest engine life "

96 XR650L, 96 Guzzi Sport, 07 BMW K1200GT,
86 Husky 400 XCE, 00 Husky Te 610 e, 1999 Husky TC610 SM, 2000 Cagiva GC; Google: TX7

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Old Today, 01:46 PM   #5
Beastly Adventurer
Joined: Jul 2007
Location: Los Angeles, CA
Oddometer: 1,866
I have been using 10w-50 on ktm 690, 990 and now 1190

not spending the extra dough on motorex. castrol or total/elf is good enough

just usrpe the grade manual calls for

When I owned my 690 (2008) they spec 10w-50
2011 KTM RC8R
2012 BMW S1000RR
2000 Kawasaki ZRX1100
2013 KTM SMT 990
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Old Today, 02:54 PM   #6
Dogi OP
Joined: Apr 2014
Oddometer: 22
Yeah, I know that 10w50 is propably good enough, as is my mother-in-law :)

I'm just curious about how big of a difference, and what kind, 10w50 will make when compared to 10w60, since I've heard that KTM has given a spanking to shops who were using w50 instead of w60..
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Old Today, 03:32 PM   #7
Spilt my beer
Wasser's Avatar
Joined: Oct 2009
Location: Colorado
Oddometer: 4,091
So, just wait another day and a few more miles and just get a bottle of 10-60.

One less thing to worry about. You'll sleep better.
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