Cleaning timing belt cover

Big Wang Bandit

You Can't Quit Me Baby
Feb 21, 2006
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San Ramon, CA - 925!
Got a 7mgte timing belt cover off ebay a while back. Just found her again and rememberd how dirty it was. Its got some crusty greast and a lot of dirt. Would it be safe to se goof off on the plastic? Anybody have any prior expereience?