Maintenance & Technical > KX250 / KX125

Math Experts...Fuel/Oil Ratios Question

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sandblaster:
Just a thought, Motul 800 is designed to run at 50:1 for hard core racing applications and 66:1 for trail riders.
I've been running it for 8 years at 50:1 with no issues.
Remember... more oil means a leaner fuel/air ratio....
Yes... I did say that  :wink:

Foxx4Beaver:
Exactly...prepare to change jets/jetting if you start changing ratios....or you can do some ugly damage.

motorman455:
Or for the math, you need to add 56 ounces of gas since you added 9.4 ounces of oil for 34:1 in 2.5 gal (320oz). At 40:1, that's good to make 40 x 9.4= 376 ounces which is 56 ounces more than the 320oz. 2qts is 64oz so that's pretty close....

txsteele:

--- Quote from: motorman455 on October 08, 2018, 11:32:21 AM ---Or for the math, you need to add 56 ounces of gas since you added 9.4 ounces of oil for 34:1 in 2.5 gal (320oz). At 40:1, that's good to make 40 x 9.4= 376 ounces which is 56 ounces more than the 320oz. 2qts is 64oz so that's pretty close....

--- End quote ---

Thanks Motorman!!!  That's exactly what I was looking for.

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