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HD put synthetic oil in the new SE bikes. I let mine go to 8000 kph before adding Mobil 1 v twin and redline gearbox oil.Theres plenty of old wifes tales saying not to use before ?000 miles because they wont run in .
Here we go you had to ask a oil question now you did it. [:'(] All the reserch I have ever done suggest you can do it at any time, I broke in my last build with cheap dino oil just because it is that cheeper and then went synthetic. Once broke in I went to syn.
The only oil manufacturer that says wait "X" number of miles before using in a new engine is Redline. Every other oil manufacturer says you can use synthetic immediately. H-D ships CVO bikes from the factory with synthetic, as do many auto manufacturers. In their literature for Syn3, H-D says it can be used at any time in the engine's life- even when new.
So to answer your question, you can switch whenever you want.
I did mine when I did my 1000 mile service.
I changed my 07 SG to Mobil 1 VT 20-50, Redline Severe (tranny) and HD Perf Plus (primary) at 1,000 miles. I now have over 18,000 on it with no problems. I change engine oil every 5,000 and trans/primary every 10,000. Just do it and ride!
I pulled the engine apart 0n my 01 to do a build and with 43K on the clock all the parts inside looked like new! Still see the crosshatching on the cylinders. I ran dino for it's life and changed every 3-4K....
Just thought I'd stir the pot a little
Oh yeah, then there's that famous flatspotting with syn....
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