I wanted to get a 250 SX as I've been a 2 stroke guy since always. I've been running Maxima K2 or 927 for my bikes for a while now but does anyone here have any good suggestions on what other premix works well with KTM 2 strokes?
2 stroke premix
Foggy
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277 Posts
Ditto on the SyntheticIt depends on the bike.
Synthetics don't need to be run as rich because of their
higher lubricity.
Do your research before you go 100:1, but that is what
I run in my 2-stroke waverunner, and my fishing boat outboard.
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277 Posts
Since when doe's KTM make a manual for there bikes ?
unk: Mine looks like a flyer from Wal - Mart
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58 Posts
OH NO !!!! I better get the 100:1 out of my 14,200 RPM Husqvarna...
On second thought... I ran a tank of 150:1 and it is still singing just fine.
Bob
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11 Posts
I bought a 13 250sx. Did u have to modify ure jetting at all? Mine is brand new and has some trouble idling.
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277 Posts
If its new have you told the dealer .....seems that's a problem for them to fix being its under warrenty
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277 Posts
I like Castrol R
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27 Posts
Where do you get the Castrol R? Used to use it years ago in my 495 KTM.
Blendzall is another if you like the nostalgia smell.
Using 125:1 Maxima Castor 927 as a top end lube in my SDR…Just messing with my riding buddies noses…they think I'm running some exotic fuel. :001_rolleyes:
I run motul 800 in my 250sx @ 32:1 and I race xc and some mx.
I bought my first KTM last summer ('13) and since the manual recommends Motorex oils, I went with it. The way I look at it, you have to buy motorcycle oils anyway, so just let the manual make the brand decision for you.
The good thing about using Motorex Cross Power 2T is that it is a 1 liter bottle and that is enough premix for 15 gallons of gas, for a 250&300 only, not a 150 or below. I mix 3 containers of gas (5 gallons each) and split the bottle of premix into 3rd's (a little over 11 oz. each since 1 liter = 33.814 oz). This gives you a ratio of 58:1. On the 250, the recommendation when using Motorex Cross Power 2T is 60:1.
Jetting changes with weather and altitude. Just like the suspension, the factory jets bikes for a target riding condition. Look on the net for "Duncan carb jetting". They have the best downloadable explanatory I have ever read.
The good thing about using Motorex Cross Power 2T is that it is a 1 liter bottle and that is enough premix for 15 gallons of gas, for a 250&300 only, not a 150 or below. I mix 3 containers of gas (5 gallons each) and split the bottle of premix into 3rd's (a little over 11 oz. each since 1 liter = 33.814 oz). This gives you a ratio of 58:1. On the 250, the recommendation when using Motorex Cross Power 2T is 60:1.
Jetting changes with weather and altitude. Just like the suspension, the factory jets bikes for a target riding condition. Look on the net for "Duncan carb jetting". They have the best downloadable explanatory I have ever read.
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Amsoil for me then after reading that test !!
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8,555 Posts
Just to give some more support to Amsoil, I've run it in my Berg
since after I broke it in with dino oil.
I am STILL on the original top end (albeit) I am going to do the top
end before the next season.
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28 Posts
No. My brother and myself did many seasons racing KX80 and 125s using castrol TTS at 32:1 and there was very little to no blue smoke. In that time we never blew an engine, nor was there any problems with carbon build up or problems with the power valve systems.
Anyone tired using Bikemaster 2T synthetic oil? I was able to got one bottle from 4 Wheel Online for free as a reward. I tried smelling the product it smell like cherry bubble gum, but never tried it yet.
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We ran 20:1 in the 80’s. They were air cooled so I guess more was needed. Yes we fouled plugs, lol
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6,065 Posts
Oil threads never get old and they will never die 🤣
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