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Originally Posted by hammersfan  I used Amsoil at the 6000KM oil change, can't really say if it has affected the shifting noise or not, too busy enjoying the improved engine and exhaust note to notice (maybe )! I think the noisy shuifting maybe a characteristic of cruisers in general but possibly a little worse in the C90. I have heard that Rotella synthetic diesel oil quitens it quite a bit but I'm not sure I want to go that road while it is under warranty. |
Rotella is 5-W40 our manual calls for 10W40 0r 20W50 in hot climates. I am not saying that the Rotella is not suitable , just that it may give Suzuki an out when it comes to warranty work, plus it is diesel oil and our bikes are not deisel ! maybe I am paranoid!