Jpud 1 #1 Posted May 6, 2018 (edited) I just picked up a wheel horse c125 with a automatic transmission. I was wondering if anyone knows what kind of trans fluid or gear oil I should use in it when I service it. Edited May 6, 2018 by Jpud Share this post Link to post Share on other sites
CountryRock 198 #2 Posted May 6, 2018 Plenty of manuals available here. Post your model and serial numbers. Should be a tag with them on the tractor somewhere. I'm sure Garry will point you to the right one Share this post Link to post Share on other sites
Sparky-(Admin) 19,593 #3 Posted May 6, 2018 The C125 auto came with both the Sundstrand and the Eaton 1100 hydro. I may be wrong but I think they both called for 10w-30 motor oil (not ATF). Share this post Link to post Share on other sites
Ed Kennell 35,904 #4 Posted May 7, 2018 (edited) Check the color...Pink is ATF and Amber is 10w-30 motor oil. Do not mix the two. Gear oil is only used for gear drive transmissions. Do not use it in a hydrostatic. Edited May 7, 2018 by Ed Kennell 2 1 Share this post Link to post Share on other sites
953 nut 51,897 #5 Posted May 7, 2018 12 hours ago, Jpud said: c125 with a automatic transmission. If you can post the model number we can give you a copy of the manual for your . If the filter on your transmission faces the rear it is an Eaton 1100, if it faces the right side it is a Sundstrand. 1 Share this post Link to post Share on other sites
