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How often to change oil in a sport quad?


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As my previous posts make quite clear, I'm very new to this and have no idea what I'm doing. However, I have many mechanically inclined friends, as well as a couple friends that rode/fixed ATVs growing up.

That being said, I'm getting completely mixed opinions on how often to change oil. The guy I bought my bike from (2008 KFX 450) said he changed oil ever couple rides. I've had a couple other people tell me that. Then I've had several other friends laugh at me for that suggestion. Tonight, I finally downloaded the owner's manual and, according to that, I'm supposed to change the oil every 90 days or 1100 miles. What the fck?

If I could get some assistance with this, I'd really appreciate it.

By the way, the title (of course) should say "sport". I can't edit it.

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Dream Car Giveaway

im an atv mechanic and motor builder ..and i change mine about every 2 to 3 tanks of fuel (20 to 25 hours)of ride time ..and i also use rotella 15w-40 in my machines ..its fine to use this on wet clutch machines ...and i also do some racing of several different types with different atv's i own...and with your machine being water cooled you could go just a little longer maybe 30 hours b4 the oil change ... but i would do it at around 20 to 25 hours run time.. yu can buy a small and cheap digital hour meeter and install it on your atv under the seat to make it easyer to keep track of run time ..

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