Re: 1940 KA 10 Home › Forum › Ask A Member › 1940 KA 10 › Re: 1940 KA 10 mike-strozReplies: 181Topics: 38 March 15, 2018 at 6:08 pm #72528 If you do end up getting it, Marvel Mystery Oil has worked wonders for me getting motors freed up. Or acetone/tranny fluid works too