Back in Nov of last year I acquiered a 1991 Accord Wagon LX with 147K mi. The car was well mintained and the previous owner had all the maint. records. The oil was changed every 5 to 7K but I didn't see any records of the tranny being serviced so I figured I should at least change the fluid. Not having ever owned a Honda before I didn't know bout them being particular about using "specific "Honda fluids but having read about how good synthetics were I decided to refill using Mobil 1 ATF. I've driven the car bout 8K mi since the change and everything has been just fine cept I just recently had a temporary glitch with the S shift light blinking and the car starting in 3rd gear. From what I've found out in this group and doing a Goggle search it was a TCU problem. After the glitch I turned off and restarted the car after a coupla blocks and it went back to normal. I cleared the computer by pulling the back-up up fuse for 30 seconds and for the last 2 days the car has driven fine. I mention this just to get some opinions since I believe this is an electrical/control unit glitch rather than any mechanical failure but I don't know that for sure so I thought I'd throw it out there for the mechanic/gearheads in the group that are much more knowledgable and definetly more experienced with Honda cars than I. So my question for the knowledgable and experienced Honda mechanics,experienced owners etc given the nature of the highly detergent nature of M1 ATF would going back to Honda ATF gunk up the tranny? or should I just keep the M1 ATF? The other possibility I thought of would be again because of the highly detergent nature of M1 ATF that now that I've driven 8k mi that I should drain it again to dump all the crud that the synthetic ATF might have loosened up and then go ahead a refill with the M1. Thanks
