how often do you change your oil on your 250f?

I go 6-7 hours. Use Castrol 10w-40. Haven't had any problems with my 01' yet.

I change my oil every 2.5 hours, and if it's a severe race (sand, long tracks ill do it every 1.5-2.0) I measure with my hour meter :cool:

I broke the bike in with Yamalube and I now use Amsoil V-TWIN 20w50 Synthetic oil.

I used to run the Amsoil Severe service racing oil, but after calling amsoil they reccomended the v-twin stuff because it's made for wetclutch systems.

Running about 4-5 hours b/w changes. I'm not a racer, revver, or clutch abuser at all so I'm not what I'd consider hard on the engine. I use Mobil 1 15w-50 synthetic.

I change mine w/ 15/50 Mobil red cap according to the manual which is every 5 rides or 1000km. Usually works out to about every 20 hours or once a month. The oil looks decent when I do change it, so I always wonder why all of you change it after every ride. What do I know? Nothing probably.

the correct mobil synthetic for your wet clutch thumper is mobil 1 15W-50 NON-EC "red cap". the mobil 1 15W-50 weight does not contain "energy conserving" friction modifiers and thus is suitable for a wet clutch bike. as far as i know, ALL other mobil 1 synthetics have the friction modifiers. you can verify that a given oil is non-friction modified by looking at the data sheet on the manufacturer's web site, OR by looking at the lower part of the API "service circle" on the oil bottle itself. if the words "Energy Conserving" appear in the API circle, it's probably not good oil for wet clutch applications. the mobil 1 15W-50 is readily identified by it's RED CAP. if you are lucky, you can get a 5 QT jug of 15W50 RED CAP in Walmart for US$18.88 or so.

jim aka the wrooster
'01 wr250f (>2500 miles with m1 15w50)