Quote from DB mag

NO HAND

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#1
(Quote):Thumper Racing reminds four-stroke owners never to run synthetic automotive motor oil like Mobil 1 in your motorcycle, as the clutch and gearbox break down the lubricating components that your crank needs to live. Dirt Bike mag. July 2001 issue p.15 :scream:
Is that true??? I know that you have to avoid the energy conserving label because this makes the clutch slip, but avoiding all automotive type oil doesn't make sense to me. What do you guys think?
 

DougRoost

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#2
Check out the thread "Full synthetic oil in my Thumper". Last I checked there were 4 full pages on this topic and this quote was one of the posts.
 
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#3
Check out the post entitled "Full Synthetic Oil in My Thumper" in this forum....there's 4 pages worth of discussion on this exact topic.
 

biglou

#4
No Hand-There is a GREAT, four-page discussion of this topic going on about halfway down the "Thumper Central" main page!:)