4l80 fluid
#11
Admin
iTrader: (22)
I run regular because most builders suggest Dex III for higher power applications, everyone I've spoke with doesn't seem to be a fan of synthetic trans fluid outside of stock setups. As for heat, I've never seen over 170 in my 80e and that was after 15 or so 1/8m passes within a 1.5 hr timeframe and never shutting the truck off.
Every combo and builder are different.
Every combo and builder are different.
Last edited by 03sierraslt; 03-23-2016 at 06:55 AM.
#13
TECH Fanatic
I run regular because most builders suggest Dex III for higher power applications, everyone I've spoke with doesn't seem to be a fan of synthetic trans fluid outside of stock setups. As for heat, I've never seen over 170 in my 80e and that was after 15 or so 1/8m passes within a 1.5 hr timeframe and never shutting the truck off.
Every combo and builder are different.
Every combo and builder are different.
#14
Hunt&Fisherator
iTrader: (15)
I was told by who I consider to be THE builder on this site when I was running a turbo 347/80E and 3600 converter to run cheap DEX 3. It was basically explained to me that the synthetics are "too slippery" in a high Hp application. If you have enough heat for that to be a concern then the cooling system needs to be addressed IMO. I could hot lap my truck in the dead of a 100deg day and never get the trans over 200 if I tried. I also had a pretty large cooler and 1/2" hoses at the time so I also had the cooling capacity. Synthetic fluids have their place but not inside a trans in a heavy vehicle behind decent power IMO....
#15
TECH Fanatic
I run mobil 1 dex 6 in a heavy truck with a 4000 stall and mods in sig.
after 2 seasons of abuse I had it torn apart and inspected and it looked good still.
trans temps get as hot as 185 sitting in traffic on a hot day
after 2 seasons of abuse I had it torn apart and inspected and it looked good still.
trans temps get as hot as 185 sitting in traffic on a hot day
#18
#20
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