Wait until your current OC has aged a little. I am 4200 mi into my 4000 OCI and it has become smoother with age; I have put off the OC until ~4500. I have always been a 3k OCI until last fall, so going beyond 4k is definitely out of my comfort zone. Oil and filter for the OC are ready if I can't hold out 'til 4500 mi on this OC.
Participating member of the BITOG Petroleum Reserve.
Thank you Commodity Futures Modernization Act of 2000.