Transmission Fluid Selection
I just bought a nice used 94 Supra TS6M with the PCM transmission. The owner's manual states that 20-20w SG rated oil should be used in that tranny. Discount Inboard Marine says that Dexon III transmission fluid is now recommended for all PCM transmissions. I have been unsuccessful at finding straight 20 weight oil and am tempted to go with DIM's recommendation. What does everyone else use???
Thanks!
Replying to Topic 'Transmission Fluid Selection'
Since the tranny already had 20w-20 oil in it I really didn't want to change over to the Dexron III. I finally managed to find the 20w-20 oil at Tractor Supply Co. Apparently that oil is still used by some old tractors. It was just $11 for a 2 gal jug! That should last me for about 8 years!
Replying to Topic 'Transmission Fluid Selection'
Have a 89 Comp and found the same problem. I think I've read that if switching to Dextron III you need to get all the old fluid out. I've changed the fluid twice now and can't say that I've gotten it all out. The advice (DIM) I've gotten is to suck it out through the dipstick opening. The dipstick opening is large enough at the start but there is a plate part way down with a small hole in it. The end result is a small diameter piece of tubing to fit through that to suck out the oil (one of those drill pumps). Anyway, I get as much as I can then top it back up. Like you I did manage to find a straight 20 W oil that I've been using (as was the previous owner). If there were a better way to get the oil out I might consider changing it to Dextron III. If any other old Comp owner out there can share an easier way to drain the oil then please let me know.