Dirt Bike Oil Analysis

bobkyle2

bobkyle2

snowflake:
the newer electronically controlled engines take a little longer :P
our DT466E can roll for about 500 miles before its pitch black, but the old school Cummins 400's, any further than a 5 mile trip and its pitch black again
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Haha, My f250 Is basically pitch black as soon as you start it.It holds almost 3 gallon.
 
cleonard

cleonard

snowflake:
with the recent Baja 500
I would love to see some of the oil out of one those bikes tested to put the idea that it needs to be changed every 3 hours thrown out the door. They see tires and air filters for the entirety of the day, same thing for the 1000
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My Beta has the separate engine and transmission oil. The longest I've gone was about 18 hours before a change. The engine side oil is just barely dirty and I'm sure that it was still fine. The transmission side not so much due to the goat trails I like and the resulting extensive clutch use. I'm sure that oil was good as well. It just had ground up or smoked clutch bits floating in it.

On my $10k bike I can do a lot of $25 oil changes. My old XR600 that I put 50k miles on didn't get that kind of service.
 
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