Sorry i dont have a part number but Here is a thread I made regarding changing diff oils. It also contains other threads made by other members on the type of oil n procedures.
There are quite a few thread discussing the oil weight. I know that scr38 use strictly amsoil. So u a search on his sn maybe he post a part number. If not he will probably pop in and let u know.
http://www.clubarmada.com/forums/sho...d.php?p=205461
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