I'm currently refurbishing a couple of our Clubs older Winchester Western Electric Self Loading Skeet/Trap machines. I'd like to change the oil in them. Before I drain the old oil out I'm wondering if anyone can tell me what use in the main gearbox? I've looked on-line and spoke with some of the veterans from the club. Answers so far range from automatic transmission to 40W engine oil. Hoping for some advice from someone who's done it.
Thanks in advance.
Thanks in advance.