Originally Posted by dirtybikefrank
Grrr. Now I'm not sure what to do. Just bought my 07 990 w 48k on it. I assume the issue was there prior. When i got it the overflow can for the radiator was empty and had grayish funk inside it. The motor runs strong and didn't buzz at all. I had the dealer do the first oil change and they didn't mention a wavy filter or anything weird w the oil. Maybe it just happened.
The oil wasn't frothy just a little more watery than normal. I'm going to put CJs kit in this weekend and give it a good flushing.
Now I'm worried about other potential issues w the motor and wonder if I should trade it in on a newer 990.
Dang. I just fell in love w her...
Don’t worry, the grey gunk is normal...rub some in your fingers and it will probably feel gritty, casting sand. Change the WP, oil, new filter and flush the coolant system and refill. Then Go ride like you stole it.