[MudHog]

So I change my oil in my 2005 crf450r every 10-15 hours.is that when you suppose to change the oil,I have heard every 10 hours and alsao they say every 20 hours,when does everyone elase do there's? Just curious.as this is my first crf

[susco64]

The owners manual calls out for every 2.5 hrs. or every race, oil and filter. I personally shoot for every other race, usually around 5 hrs. It does get costly, especially using oil that costs about $30 a gallon,on 3 bikes, but I have never had a oil related failure that I can remember in any of my 8, 4-stroke machines.
I use Bel-Ray Thumper oil in my motor side, Bel-Ray 80wt. gear oil in my tranny, and a good qualityPAPER oil filter, Hi-Filtro, Filtron, or Honda OEM, preferably.

[Charlie C]

Between 10 and 12 hours, closer to 12 on both 250 and 450.

Susco64, are you sure that the manual says that? I'm not looking at 1 but I swore it was 12 hours or x amount of races.

I could be wrong, it happened once before!

[susco64]

Your right Charlie, I just rechecked 15 hrs or 6 races, seems to long though to me. I was looking at the air filter service at 2.5 hrs. I still plan on changing mine every 2 race weekends that = 8 motos, 4 moto practices, and 2 practice days. Totals around 5-6 hrs ride time.

[MudHog]

so i will be good to change every ride or so,if i ride fo 10-12 hours per ride.other wise everyother ride

[moto_x2005]

hmm even with what the manual states i still change my oil every 4-5 hrs max using a good quality full synthetic.. Amsoil myself..

[harrysmith500]

thats a long ride.. 12 hours.. woow...

im using amsoil signature series 0-30 and amsoil gear oil 80-90. change every 8-10 hours.

[The Captain]

Every 3hrs engine oil. Every 6hrs, oil filter and trans oil. Hiflo filtro on the filter.

[rideredmx2]

10 to 20 hrs is way to long to go between oil changes IMO....i change mine after every 4 to 5 rides and filter and tranny every other oil change and use ProHonda HP4 oil

[tWixT]

Yeah, but most people ride more than 2 hours each time they're out. I do at least. I wouldn't base it off amount of times you've rode the bike, but by the hours you put on the bike during those rides.

[rideredmx2]

tWixT, on 22 October 2009 - 08:42 PM, said:

Yeah, but most people ride more than 2 hours each time they're out. I do at least. I wouldn't base it off amount of times you've rode the bike, but by the hours you put on the bike during those rides.

Very true,good point....i myself only ride moto so i go by how many times to the track not how many times i rode on that given day as i usually put in 5 to 6 good motos each time out to the track, but lots of ppl trail ride and u add hours alot faster that way and the only real way to know how many hours u have on it is if u have an hour meter on ur bike

[Danny Boy]

I really need to invest in an hour meter cause i don't always remember exactly how long i rode vs. how much i b.s.'ed!

[sp220]

I change mine after every ride, trans. and motor, sometimes I change the filter every other ride but only if I don't have one handy.

[Zeek]

I would say, change your oil and transmission oil as often as you can!
And make sure you replace your oil filter too!