replacing trans fluid



replacing trans fluid

Postby grumpyvette » December 2nd, 2014, 7:54 am

Wanderwilly wrote:I am going to change the fluid and filter on my 1994 Vette auto transmission .From what I have read I will drain about four quarts when I drop the pan. When I refill it will mix with the remaining fluid which if I understand the book correctly is a large amount.Is this O.K.? My friend next door,another car nut, gave me 5 qts. of Mobil 1 Synthetic ATF multi vehicle trans fluid. Can I use this? This is all new to me.My Vette is my hobby car.


heres a few related thread links, you might want to read thru, and Id also point out that almost any automatic transmission will have about 1/2 its fluid capacity in the transmission itself and 1/3rd-to-1/2 its fluid capacity or more in the connecting lines and the torque converter , but it could be significantly more if you installed remote mount filters and a fluid cooler , as both will potentially add a good deal more durability and fluid cooling capacity to the system.
Id also point out that adding an additional , properly sized trans cooler with the correct fluid transfer line sizes,with a powered fan,can very easily maintain the trans fluid temps in the 150F-170F range even under high stress performance application conditions
Image
Image
Image
keep in mind automatic transmissions tend to add a significant amount of heat to radiators that use the lower section to cool the transmission, adding a large efficient trans fluid cooler to the car can also significantly reduce the heat loads on the radiator

many guys don,t realize that adding an oil and/or a transmission fluid cooler, with its own fan and radiator that allows those liquids to be cooled separately, to your engine and drive train, significantly reduces the heat load on the radiator, and generally allows the engine temps to decline noticeably. in fact just adding a high volume oil pan and a transmission cooler can drop your engine coolant temps 20F-30F in many cases, Id also point out that theres generally 3-5 quarts in the transmission oil pan and an additional 5-6quarts in the converter and lines to the trans cooler
Image

Image
remote mounted oil filters can be used along with an oil cooler to to increase transmission cooler efficiency, and the remote filter and cooler used on a transmission also tends to increase fluid capacity ,and as a result the systems cooling efficiency as the longer the fluid remains in transit outside the trans dissipating its absorbed heat, the use of a auxiliary fan equipped fluid cooler on a performance transmission with a high stall speed converter tends to significantly increase its potential durability.
Image
a rather common issue with adding oil coolers, is that many of the coolers available can significantly restrict fluid flow because of the small restrictive internal cross section of the internal tubing, AN #6 and 3/8" tube coolers can be quite restrictive, the AN#8 are better but DUAL AN#8 coolers and AN#10 lines generally work the best, and there's also frequently limited space to position a cooler in the outside cool air flow mandating a powered fans.
the solution to both issues can and frequently does require use of two different oil coolers but placed in series this can further increase flow restrictions, the solution is in use of larger internal cross sectional area,transfer lines and mounting the twin coolers in parallel thus doubling the effective cross sectional area reducing the flow restriction the cooler potentially could produce if used in series

http://auto.howstuffworks.com/auto-part ... olers2.htm

viewtopic.php?f=57&t=176&p=12473&hilit=corvette+trans+cooler#p12473

viewtopic.php?f=80&t=10514&p=44478#p44478

http://etereman.com/blog/general-motors ... ansmission

viewtopic.php?f=71&t=662&p=9328#p9328

viewtopic.php?f=45&t=307&p=372&hilit=trans+fluid#p372

viewtopic.php?f=71&t=2817&p=7265&hilit=transmission+fluid#p7265

http://www.corvettebuyers.com/c4vettes/ ... enance.htm

viewtopic.php?f=71&t=748&p=2940&hilit=transmission+fluid#p2940

OK FIRST LOOK UP THE TRANSMISSIONS FLUID CAPACITY
and go to a local NAPA and get a WIX trans fluid filter, as they are decent quality and cheap, and should be replaced at each fluid change Id also strongly suggest a magnet in the oil pan
http://www.kjmagnetics.com/proddetail.asp?prod=D82SH

http://www.amsoil.com/shop/by-product/f ... e=58904-EA
HERES A LINK


http://fluidcapacity.com/
http://www.cartechbooks.com/techtips/autotransfluid

HERES YOUR PARTICULAR RESULT

1994 CHEVROLET CORVETTE 5.7L 8-cyl Engine Code [P]
LUBRICANTS & FLUIDS:
Engine Oil
Grade 1......API*[1]

Maximum Performance SAE 5W-30 Signature Series 100% Synthetic Motor Oil (ASLQT)

Performance Plus XL 5W-30 Synthetic Motor Oil (XLFQT)

Performance OE 5W30 Synthetic Motor Oil (OEFQT)
Above 0 F......10W-30
All TEMPS......5W-30
Manual Transmission,S6-40/ML9......GLS [2]
All TEMPS......
Synthetic Synchromesh Transmission Fluid (5W-30) (MTFQT)
Automatic Transmission,4L60-E......AF6 [3]
Signature Series Fuel-Efficient Synthetic Automatic Transmission Fluid (ATL) (ATLQT)
OE Fuel-Efficient Synthetic Automatic Transmission Fluid (OTLQT)
Standard Differential, Rear......GL-5
All TEMPS......80W-90
SEVERE GEAR 75W-90 Synthetic EP Lubricant (SVGQT)
75W-90 Synthetic Long Life Gear Lube (FGRQT)
SEVERE GEAR 75W-110 Synthetic EP Lubricant (SVTQT)
SAE 80W-90 Synthetic Gear Lube (AGLQT)
Limited Slip Differential, Rear......GL-5*
All TEMPS......80W-90 [4]
SAE 80W-90 Synthetic Gear Lube (AGLQT)
SEVERE GEAR 75W-90 Synthetic EP Lubricant (SVGQT)
75W-90 Synthetic Long Life Gear Lube (FGRQT)
SEVERE GEAR 75W-110 Synthetic EP Lubricant (SVTQT)
Fluids
Brake Fluid......HB
AMSOIL Brake Fluid DOT-3 (BF3SN) [5]
Power Steering Fluid......PS
Power Steering Fluid (PSFCN) [6]
[1] Oil must be formulated to meet GM standard GM4718M.
[2] GM P/N 1052931.
[3] This specification has been updated from Dexron II or III to
Dexron VI per a Technical Service Bulletin from the
manufacturer
[4] Limited slip identification: tag under cover-attaching
bolt. Models with limited slip use 4 oz & 4.7 oz on 2007-08
XLR, 2006-08 Corvette Except Z06, 2006-08 Z06 6.8 oz
GM P/N 1052358 additive or equivalent when fluid is
changed.
[5] Hydraulic Brake Fluid, DOT 3 P/N 12377967, Spec. 9986121
[6] GM P/N 1052884, Spec 9985010
FILTERS:
Oil Filter 25,000-Mile Ea Oil Filter (EAO23)
Oil Filter WIX 51036 Oil Filter
Transmission Filter WIX 58904 Trans Filter
CHASSIS LUBRICATION:
6-8 Fittings, 0 Plugs..........LB
Synthetic Multi Purpose #2 (GLC3P)
Synthetic Water Resistant #2 (GWR3P)
DOMINATOR Synthetic Racing Grease NLGI#2 GC/LB (GRGCR)
CAPACITIES:
Engine, with filter..........4.8 quarts [1]
Cooling System, Initial Fill..........14.8 quarts
AMSOIL Antifreeze and Engine Coolant
Automatic Transmission, 4L60-E Initial Fill..........5 quarts
Automatic Transmission, Total Fill
4 speed 4L60-E..........11.2 quarts

Manual Transmission, S6-40/ML9..........4.4 pints
Differential, Rear..........3.2 pints
[1] After refill check oil level.
TORQUES:
Oil Drain Plug.....16 ft/lbs
Manual Transmission
Fill Plug 26 ft/lbs
Drain Plug 26 ft/lbs

If you simply are removing your transmission oil pan and replacing the transmission oil filter will replace approximately 5 quarts of the total of 11 quarts as the converter and other areas hold about 6 quarts , that won,t drain, so if you don,t intend to mix old trans fluid and new fluid youll need to fill and run and drain and refill or flush the torque converter.
First, normal operating temps, without adding an additional large effective trans fluid cooler can rise to be as high as 245F-250F, which can rapidly burn the clutches,

with a high stall speed converter,being installed, you need to find and install a more effective trans fluid cooler or youll find that higher average fluid temp will reduce the transmission life span noticeably, lots of guys ignore this and find that they eventually need to replace the transmission, they get it rebuilt, replaced and the new trans doesn,t hold up for the same reason the original trans failed...the trans fluid is too hot!
rather than find this out the way many guys do and pay for several transmissions its smarter to instal an effective trans fluid cooler with a fan, and AN# 8 lines to the cooler. have a trans shop flush the trans converter, lines and replace the filter at reasonable intervals and if you can YOU SUPPLY THE TRANS FLUID AND WATCH IT BE USED, so they don,t substitute far less expensive inferior transmission fluid.

http://forum.grumpysperformance.com/viewtopic.php?f=71&t=662

http://forum.grumpysperformance.com/viewtopic.php?f=57&t=176


be sure you accurately measure the available room in the location you plan to install an aux trans fluid cooler , get as large a cooler as you can fit in the car with a powered fan, because keeping the trans fluid down near 170F significantly extends trans life
Image
if you race the car as the extra rpms and stress quickly build higher heat, which can quickly destroy the internal clutches in a transmission, depending on if you race auto cross etc. EVEN Normal driving, can result in 220F. This goes for any year and model c4 corvette with a torque converter clutch.
Transmission fluid hydraulically Transfers power within the torque converter, provides almost all the cooling to your transmission AND LUBRICATES.
keep in mind that all oil and transmission fluids breakdown over time,and heat increases the rate it degrades , The lubrication properties are critical to friction band, clutches,and bronze bushings within the transmission.
Remember that fluid does almost all of the work in the automatic transmission,and as it wears it should ideally be changed about every 30K-35K miles along with the filter,AT A MINIMUM, and IDEALLY ONCE A YEAR or every 15K if you drive the car hard! a trans shop will generally charge about $100 to flush out all 11 quarts and replace it with new trans fluid, the more frequently the fluids replaced the less crap builds up as flushing the trans with new fluid removes a significant percentage of metallic dust and built up varnish.
therefore, less chance that your will experience problems.

yes you can remove the transmission oil pan, replace the trans filter and replace both,the filter and fluid, then disconnect the trans fluid cooler line and allow the engine to run for a few seconds to pump remaining fluid out into a catch pan and refill the trans several times to do a D.I.Y. trans flush but theres a minimal chance if your not careful youll burn clutches if you let it run low on trans fluid, a trans shop pumps new fluid thru flushing out the oil fluid as the trans is flushed under constant pressure
DO NOT, use a generic brand of Dexron 3 ATF. These cheaper trans fluids are not the same quality as the better brands and just above Dexron 3 standards, and will not have the lubricity, or cleaning , or heat resistive additive packages to correctly work within your transmission for the life of the fluid.

IF YOU CAN,T SMOKE THE TIRES AT WILL,FROM A 60 MPH ROLLING START YOUR ENGINE NEEDS MORE WORK!!"!
IF YOU CAN , YOU NEED BETTER TIRES AND YOUR SUSPENSION NEEDS MORE WORK!!
grumpyvette

User avatar
Site Admin
Site Admin
 
Posts: 14105
Joined: September 14th, 2008, 1:40 pm
Location: florida

Re: replacing trans fluid

Postby grumpyvette » December 2nd, 2014, 8:03 am

Image
Image
Image

http://www.timskelton.com/lightning/rac ... nstall.htm

http://www.summitracing.com/parts/DER-15800/?rtype=10

http://www.tciauto.com/Products/TechInf ... _donts.asp

Image

if the lines on the cooler look like this (below)
Image

coolers with aux fans tend to be far more effective
Image

you generally feed the fluid in the bottom and out the top line connection to prevent air trapped in the lines
naturally youll want to route all lines as far from headers as you can to prevent burns on the lines


Cooler Fittings
General Motors Ford Chrysler

GM Transmission Cooler Fittings


Powerglide - OEM
Fitting Location Thread Size Flow Direction
Upper â…›" Pipe Return/in
Lower â…›" Pipe Cooler feed/out


Powerglide - Dedenbear
Fitting Location Thread Size Flow Direction
Upper ¼" Pipe Return/in
Lower ¼" Pipe Cooler feed/out


TH200C Metric, 2004R
Fitting Location Thread Size Flow Direction
Upper ¼" Pipe Cooler feed/out
Lower ¼" Pipe Return/in


TH350, TH250
Fitting Location Thread Size Flow Direction
Upper ¼" Pipe Return/in
Lower ¼" Pipe Cooler feed/out


TH400
Fitting Location Thread Size Flow Direction
Upper ¼" Pipe Return/in
Lower ¼" Pipe Cooler feed/out


700R4/4L60/4L60E/4L65E
Fitting Location Thread Size Flow Direction
Upper ¼" Pipe Return/in
Lower ¼" Pipe Cooler feed/out


4L80E (1991-1996)
Fitting Location Thread Size Flow Direction
Upper ¼" Pipe Return/in
Lower ¼" Pipe Cooler feed/out


4L80E/4L85E (1997 & later)
Fitting Location Thread Size Flow Direction
Rear ¼" Pipe Return/in
Front ¼" Pipe Cooler feed/out


Ford Transmission Cooler Fittings

C3, C4, C5, C6
Fitting Location Thread Size Thread Size Flow Direction
Front ¼" Pipe Cooler feed/out
Rear ¼" Pipe Return/in


AOD
Fitting Location Thread Size Flow Direction
Upper ¼" Pipe Cooler feed/out
Lower ¼" Pipe Return/in


AODE/4R70W
Fitting Location Thread Size Flow Direction
Upper ¼" Pipe Return/in
Lower ¼" Pipe Cooler feed/out


E4OD/4R100
Fitting Location Thread Size Flow Direction
Front ¼" Pipe Cooler feed/out
Rear ¼" Pipe Return/in


Chrysler Transmission Cooler Fittings
All Torqueflite
Fitting Location Thread Size Flow Direction
Front â…›" Pipe Cooler feed/out
Rear â…›" Pipe Return/in



LOOK THIS OVER
http://www.transmissioncenter.org/Auxil ... _Where.htm

Image
IF YOU CAN,T SMOKE THE TIRES AT WILL,FROM A 60 MPH ROLLING START YOUR ENGINE NEEDS MORE WORK!!"!
IF YOU CAN , YOU NEED BETTER TIRES AND YOUR SUSPENSION NEEDS MORE WORK!!
grumpyvette

User avatar
Site Admin
Site Admin
 
Posts: 14105
Joined: September 14th, 2008, 1:40 pm
Location: florida

Re: replacing trans fluid

Postby grumpyvette » December 2nd, 2014, 6:49 pm

http://stuccu.com/s/Deep+Transmission+P ... 7AodXV0ALA

http://www.summitracing.com/search/part ... 0Oil%20Pan

http://www.jegs.com/p/TCI/TCI-Cast-Alum ... 7/10002/-1

adding a deeper trans pan will generally improve the trans cooling a bit but it also tends to make ground clearance issues far more critical and damage more likely the use of an auxiliary fluid fan equipped cooler is generally far more effective. Id strongly suggest AN#8 or 1/2" NPT minimum fitting size and carefully measuring where youll install the fluid cooler well before ordering one and installing one thats large enough to easily handle the heat loads that may be required.
common mistakes are ordering a cooler to large to fit in available locations, or too small to do the job, and coolers with lines that are too small that restrict fluid flow rates


Image
http://www.summitracing.com/parts/der-15950
Image
http://www.summitracing.com/parts/flx-45251
Image
http://www.summitracing.com/parts/flx-45904
IF YOU CAN,T SMOKE THE TIRES AT WILL,FROM A 60 MPH ROLLING START YOUR ENGINE NEEDS MORE WORK!!"!
IF YOU CAN , YOU NEED BETTER TIRES AND YOUR SUSPENSION NEEDS MORE WORK!!
grumpyvette

User avatar
Site Admin
Site Admin
 
Posts: 14105
Joined: September 14th, 2008, 1:40 pm
Location: florida

Re: replacing trans fluid

Postby bytor » December 3rd, 2014, 2:21 pm

I replaced the trany fluid in my 87 vette not long ago. Here's how I did it.

http://forum.grumpysperformance.com/viewtopic.php?f=71&t=10374
My 383 build photos
bytor

User avatar
 
Posts: 379
Joined: March 30th, 2010, 9:13 am
Location: Simpsonville, SC


Return to transmission and Drive train

Who is online

Users browsing this forum: No registered users and 4 guests

cron