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About 1959MackB61

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    Glen Rock Pa

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  1. Thank you for the replies. My father and I checked and we agree that I have the clarifier filter. I have ordered the Wix Filter and Gasket and will add a photo of the engine when I can. The truck lives at my parents house since I do not have a large enough garage to fit it in. Again, thank you all for the guidance. I appreciate it.
  2. Thank you Ben. That information sounds like a great idea. I am going to work on that next but wanted to acknowledge your response first. Thank you.
  3. Hi all, I am looking to change the engine oil in my 1959 Mack B61 with a 711 thermodyne in it. I am not a mechanic by trade and cannot afford to take it to a shop (I bought it so I could learn by doing anyhow). I have done plenty of oil changes on my day to day vehicles but realize this is a different machine. I haven’t located any service books for my model (at least none that I could afford) so my hope is that someone here would be willing to let me know: what viscosity I need, gallon quantity, and suggested brand of oil. I also need to know what oil filter I would need. My father is a heavy machine mechanic so do not worry about me destroying anything or hurting myself. He is willing to help me if I ask. Unfortunately we are both stumped on these details at the moment. Thank you for reading.
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