Re: Transmission service Reply #50 – January 17, 2022, 12:14:21 pm Question? MT-643 takes Dexron III, C4. Our coach is a 1989 model. Any issues going to full synthetic fluid on it? 77,000 miles on coach..... Quote Selected
Re: Transmission service Reply #51 – January 17, 2022, 01:11:57 pm Talk to Allison toGet the best answers. Quote Selected 2 Likes