Join Date: Sep 2011
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Seems strange that some would develop a rattle after getting it back from the 600 mi service.
Do you know if they made adjustments to the valves, and what clearance did they adjust them to? Were they loose or tight before?
Is it possible they went with a different oil after servicing than what came originally as a "break-in" oil? Could the oil type and grade make a difference?
EDIT: Recommended is 10W-30 - anyone with a rattle want to try a synthetic 5W-40 or 10W-40 and see if anything changes? It will give you more protection and slightly higher oil pressure - might help.
40-grade oil is much more common than 30-grade in most cycles. Synthetic is always a good idea IMO, especially if the engine doesn't hold much oil. An inexpensive synthetic that is very good quality, easy to get, and is rated for use with wet clutches is Shell Rotella T6 5W-40 (the 5W refers to it's cold weather rating, and reduces engine wear during cold starts). Oils like Motul and Repsol Ester-based synthetic may be slightly better, but Rotella T6 is still very good for any normal street application IMO.
Last edited by jkv357; 10-05-2011 at 12:00 PM.