View Full Version : mixing fluids
qiksix
08-19-2011, 07:36 AM
just fitted a b&m deep pan to my t350, after searching here guy's are recomending to run 'f' type fluid. i have been running dexron III so the convertor still has a bit left in it, should i mix the 'f' type or keep using the dexIII.
markdunlap
08-19-2011, 03:15 PM
Not quite on this subject, but does anyone use MOBIL 1 synthetic or Lucas synthetic trans fluid?
TheRabbit
08-20-2011, 05:40 AM
I don't think it will hurt mixing them together.
My trans builder always tells me to run Lucas, but I never have. I've used Red Line and Royal Purple and used the cheaper B&M trans fliud too.
zipper06
08-20-2011, 06:37 AM
As everyone knows the Dexron fluid normally used by GM has a slipping agent, GM has never rccommended the type F because it doesn't contain the slipping agent, which Ford forever has recommended and shifts more solid. I've run Type F for over 40 yrs, in both racing and street cars and i've mixed them. I don't buy the special oils just OTC and i never use an additive like seal savers or anything else. I've tried the B&M and saw no difference from OTC's. I do use The VR1 in the alcohol engines, otherwise it's just OTC's.
JMO
Zip.
qiksix
08-20-2011, 03:54 PM
thanks guy's i think i'll try the f type fluid.
hammertime
08-20-2011, 08:02 PM
Not quite on this subject, but does anyone use MOBIL 1 synthetic or Lucas synthetic trans fluid?
Mobil 1 or Amsoil synthetic is great stuff, a 30 degree drop in the round robin late rounds.
Mixing will not hurt
wazup
08-21-2011, 12:32 PM
I bought a P/G from FTI and ask them what fluid did they want me to run in it and said type F do to it dont foam like other fluids.
TS1955
08-21-2011, 04:28 PM
Not quite on this subject, but does anyone use MOBIL 1 synthetic or Lucas synthetic trans fluid?
Mobil 1 or Amsoil synthetic is great stuff, a 30 degree drop in the round robin late rounds.
Mixing will not hurt
X2...on Amsoil synthetic trans fluid.
TS1955
hammertime
08-21-2011, 04:49 PM
I bought a P/G from FTI and ask them what fluid did they want me to run in it and said type F do to it dont foam like other fluids.
thats not all the way true, I was a diehard Type F guy for years until I bought some "wolfs head" brand ... it foamed worse then anything I've ever seen. Stay away from anything they make :)
Amsoil also does not foam, a good fact if none of you have done this, fluids are a major deal on converter stall. You can tighten or loosen a converter with just a fluid change :)