I did the break in cycle on my 2009 200XC with fully synthetic pre-mix. Shortly after I came on the net and everybody is telling me that I made a mistake, and should have used conventional oil for break in to help seat the rings. What damage might I have done? Should I switch to conventional for a few tanks to seat the rings, then back to synthetic? Am I reading too much into all of this?

I ran syn in 06 300 from new with no issues. I don't think you have anything to worry about.

gmoss said:

Don't sweat it. You're just fine. Go ride, and have fun, and never think about this again.

Joe

with that line of thinking the best way to break in a bike is with no oil, you've done nothing wrong breaking it in on full synthetic, every bike i've owned i've broken in and used motorec full synthetic oils, after pulling my 09 300 apart at 140 hours the rigns are still in spec.

I broke in my 08 300XC with synthetic oil and had no problems. I did the top end at 60hrs it did not need it everything looked great on the inside. I am pretty sure the dealer had full syn Motorex in it when I picked it up.

the guys giving you info don't know what they are taking about.

If anything it will take a little longer to break the rings in.

skookumrdr said:

How so? The synthetic oil debate is the stupidest myth when it comes to motorcycles.

skookumrdr was not clear about who does not know what they talking about and did not answers Slimbo's questions.