trans fluid and shift quality

volvorod85 · 05-10-2007, 11:25 PM

Ill keep this short and sweet. Ive got one car with an AW71 (the other will be stick) since i know i will eventually kill the AW, cause i drive the piss outa it, i've been thinking of how to prolong the life (changing the way i drive is neither reasonable or realistic, heh) SO...one way to get a firmer shift and keep from burning up stuff to quick is to raise the pressure. Since that not as easy as turning a screw an old trick that i learned in an auto trans class i took comes to mind.

An AW71 takes dexron III. Type F is used for eariler fords. Type F is a higher viscosity fluid. I made this mistake only once and serviced the trans in my 86 escort with type F. it always had a pretty hard shift after that....a few months later i serviced it again with dexron III....had a much smoother shift. I inquired about this and basically its a thicker fluid, so the pressure is higher = a slightly firmer shift.

Anyone try this in an AW71?

Mark

volvorod85 · 05-16-2007, 08:49 PM

no one has any input?
Mark

n xntrx volvo · 05-16-2007, 08:52 PM

peehound · 05-16-2007, 09:33 PM

Not higher viscosity.
Type F has friction modifiers so it shifts harder.

Lord Tentacle · 05-16-2007, 09:34 PM

i've been running cheap generic synthetic tranny fluid in my AW71 for the last 130k changed out every 60k, it has been beaten on
regularly towed 3-5000lb
atached to a motor that puts out over 300ft-lbs

still drives like it was new

kahluaTDI · 05-16-2007, 10:06 PM

just adjust the kickdown cable so it shifts at a higher rpm

IceCold4x4 · 05-16-2007, 10:11 PM

so would it hurt to run type F?

kahluaTDI · 05-16-2007, 10:46 PM

I have no idea, but i'd say if you've replaced the tranny fluid regularly and recently, it probably wouldnt hurt too much. and if you've got an m46 or whatever on the way, why the hell not.

mikep · 05-17-2007, 08:45 PM

Quote:

Originally Posted by peehound

Not higher viscosity.
Type F lacks friction modifiers so it shifts harder.

Type F will wear out your trans. I burned up the drum bushings in my TH350 with it.

05-10-2007, 11:25 PM	#1
volvorod85 Board Member Join Date: Feb 2003 Location: Sunny Socal	trans fluid and shift quality Ill keep this short and sweet. Ive got one car with an AW71 (the other will be stick) since i know i will eventually kill the AW, cause i drive the piss outa it, i've been thinking of how to prolong the life (changing the way i drive is neither reasonable or realistic, heh) SO...one way to get a firmer shift and keep from burning up stuff to quick is to raise the pressure. Since that not as easy as turning a screw an old trick that i learned in an auto trans class i took comes to mind. An AW71 takes dexron III. Type F is used for eariler fords. Type F is a higher viscosity fluid. I made this mistake only once and serviced the trans in my 86 escort with type F. it always had a pretty hard shift after that....a few months later i serviced it again with dexron III....had a much smoother shift. I inquired about this and basically its a thicker fluid, so the pressure is higher = a slightly firmer shift. Anyone try this in an AW71? Mark __________________ 1995 855 Turbo Stock <--Daily Driver 1979 242dl B230FT AW 71 <--Wifey's ride 1959 Austin Healey Sprite <--something completely different 1974 Fiat X1/9 <--Moms little toy "Driving the old 2 valve 740 is a bit like driving an IKEA wall unit, so leisurely is its acceleration, so angular its lines." My former brick saved my life 6/25/03....Volvo for Life New pic comin eventually.......

05-16-2007, 08:52 PM	#3
n xntrx volvo Newbie Join Date: Dec 2003 Location: corinth, ms / los angeles	. __________________ my cars (click me) I'm not here, Please leave a message after the tone........(or email me). Last edited by n xntrx volvo; 06-03-2007 at 04:51 AM..

05-16-2007, 10:11 PM	#7
IceCold4x4 Board Member Join Date: Feb 2006 Location: Birmingham, Alabama	so would it hurt to run type F? __________________ 1992 Volvo 940 Turbo - Being parted out 2006 S60R - Electric Silver / Nordcap - A Stocker Deluxe with Cheese (dreamed about this car for 6 years now I own one YEA!) 2006 XC90 V8 AWD - Triple Black - The gun mobile.

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05-16-2007, 08:49 PM	#2
volvorod85 Board Member Join Date: Feb 2003 Location: Sunny Socal	no one has any input? Mark

05-16-2007, 09:33 PM	#4
peehound "Arf" she said. Join Date: Dec 2003 Location: Santa Clara, CA	Not higher viscosity. Type F has friction modifiers so it shifts harder.

05-16-2007, 10:46 PM	#8
kahluaTDI Board Member Join Date: Jan 2005 Location: Birmingham, AL	I have no idea, but i'd say if you've replaced the tranny fluid regularly and recently, it probably wouldnt hurt too much. and if you've got an m46 or whatever on the way, why the hell not.