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Fluid for TH350 #4783846
06/11/18 11:12 AM
06/11/18 11:12 AM
Joined: Feb 2008
Posts: 37
Washington, DC
CheezWhiz Offline OP
CheezWhiz  Offline OP
Joined: Feb 2008
Posts: 37
Washington, DC
I've got an old 72 Chevy 4x4 with a TH350. I'd like to change out the trans fluid and filter. I'm about 99% certain I can go to Wal-mart and buy the cheapest Dexron they make and I'll be fine, but I thought I'd check here first. Am I missing anything? The truck doesn't see particularly tough duty, a light trip to the dump every now and again and plowing a 200 yard driveway in the winter.

Re: Fluid for TH350 [Re: CheezWhiz] #4783852
06/11/18 11:15 AM
06/11/18 11:15 AM
Joined: Jan 2017
Posts: 1,801
VW Fanboy Island
maxdustington Offline
maxdustington  Offline
Joined: Jan 2017
Posts: 1,801
VW Fanboy Island
Maxlife


03 Jetta AWP/09A 205k kms
Edge 0W40 + Mann 719/30
Re: Fluid for TH350 [Re: maxdustington] #4783866
06/11/18 11:25 AM
06/11/18 11:25 AM
Joined: Apr 2017
Posts: 1,342
San Rafael, CA
dogememe Offline
dogememe  Offline
Joined: Apr 2017
Posts: 1,342
San Rafael, CA
Originally Posted By: maxdustington
Maxlife


I wouldn't. It's thinner than regular Dex III, right?

I like the OP's idea of buying the cheapest Dex III they can find smile


2010 Ford Escape 2.5 ~91K: Royal Purple 5W-30, AMSOIL SS FE ATF.
1995 Chevy Silverado 5.7 ~276K: Delo 10W-30, AMSOIL OE MV ATF.
Re: Fluid for TH350 [Re: CheezWhiz] #4783869
06/11/18 11:27 AM
06/11/18 11:27 AM
Joined: Feb 2008
Posts: 37
Washington, DC
CheezWhiz Offline OP
CheezWhiz  Offline OP
Joined: Feb 2008
Posts: 37
Washington, DC
She leaks a bit and I don't see a strong reason to use an expensive fluid. It's just an old beater truck that does some work for me, I just don't want to mess anything up.

Re: Fluid for TH350 [Re: CheezWhiz] #4783878
06/11/18 11:29 AM
06/11/18 11:29 AM
Joined: Jan 2004
Posts: 4,338
California
nthach Offline
nthach  Offline
Joined: Jan 2004
Posts: 4,338
California
Plain jane Dex-III. No need for MaxLife in this.

Re: Fluid for TH350 [Re: dogememe] #4783880
06/11/18 11:30 AM
06/11/18 11:30 AM
Joined: Oct 2009
Posts: 386
California
Billbert Offline
Billbert  Offline
Joined: Oct 2009
Posts: 386
California
I will 2nd Maxlife for the additional seal conditioners (it's 45years old)


If you think you can, or if you think you can't, You are probably right.

Auto Instructor / ASE Master Tech
Re: Fluid for TH350 [Re: CheezWhiz] #4783904
06/11/18 11:41 AM
06/11/18 11:41 AM
Joined: Feb 2008
Posts: 37
Washington, DC
CheezWhiz Offline OP
CheezWhiz  Offline OP
Joined: Feb 2008
Posts: 37
Washington, DC
So a gallon of Maxlife is 18 bucks, a gallon of Supertech is 12 bucks. I'm not that cost-sensitive if there really is a benefit to the Valvoline. At the same time, this truck usually gets the cheap stuff, the rev limiter is set at 4000 RPM, the valve springs are weak, etc.

Re: Fluid for TH350 [Re: CheezWhiz] #4783931
06/11/18 12:18 PM
06/11/18 12:18 PM
Joined: Sep 2004
Posts: 7,707
Marshfield , MA
andyd Offline
andyd  Offline
Joined: Sep 2004
Posts: 7,707
Marshfield , MA
Originally Posted By: CheezWhiz
So a gallon of Maxlife is 18 bucks, a gallon of Supertech is 12 bucks. I'm not that cost-sensitive if there really is a benefit to the Valvoline. At the same time, this truck usually gets the cheap stuff, the rev limiter is set at 4000 RPM, the valve springs are weak, etc.
why change what you're doing?


'16 Camry LE STP synth 0w20 and STP filter. the Fridge

1994 Ranger ,the Rat, 5w30 dino, STP filter

'16 Camry SE, Valvoline HM 0w20 and OEM filter
Thick oil is better grin2
Re: Fluid for TH350 [Re: andyd] #4783933
06/11/18 12:22 PM
06/11/18 12:22 PM
Joined: Feb 2008
Posts: 37
Washington, DC
CheezWhiz Offline OP
CheezWhiz  Offline OP
Joined: Feb 2008
Posts: 37
Washington, DC
Originally Posted By: andyd
Originally Posted By: CheezWhiz
So a gallon of Maxlife is 18 bucks, a gallon of Supertech is 12 bucks. I'm not that cost-sensitive if there really is a benefit to the Valvoline. At the same time, this truck usually gets the cheap stuff, the rev limiter is set at 4000 RPM, the valve springs are weak, etc.
why change what you're doing?


Well I've had it for five years and never changed the trans fluid ... fluid still looks nice and clear red, and prior owner had receipts for a recent trans rebuild, and I've got less than 10k miles on it since I bought it.

So basically, I don't know what's in it, the trans seems great as it is, and I am just changing it because it seems like a good idea.

Re: Fluid for TH350 [Re: CheezWhiz] #4783936
06/11/18 12:28 PM
06/11/18 12:28 PM
Joined: Nov 2006
Posts: 20,359
MA, Mittelfranken.de
Trav Offline
Trav  Offline
Joined: Nov 2006
Posts: 20,359
MA, Mittelfranken.de
Go with the supertech dex mercon. Made by Pennzoil which for me is preferable to any Valvoline product.

https://www.walmart.com/ip/Super-Tech-Automatic-Transmission-Fluid/20573820


ASE L1, Master. Deutsch Meisterbrief.
Re: Fluid for TH350 [Re: CheezWhiz] #4783952
06/11/18 12:55 PM
06/11/18 12:55 PM
Joined: Mar 2013
Posts: 4,953
The Midwest
skyactiv Offline
skyactiv  Offline
Joined: Mar 2013
Posts: 4,953
The Midwest
Performance people use to put in type F fluid which makes the transmission shift a little firmer and prolongs the clutch pack life.


Wife: 15' Audi A4 quattro 6 speed manual
Me: 13' VW GTI 3 door 6 speed manual
Wanted: 2019 Ford Ranger
Re: Fluid for TH350 [Re: CheezWhiz] #4783957
06/11/18 01:00 PM
06/11/18 01:00 PM
Joined: Feb 2008
Posts: 37
Washington, DC
CheezWhiz Offline OP
CheezWhiz  Offline OP
Joined: Feb 2008
Posts: 37
Washington, DC
So my understanding is that, typically, you can't get all of the fluid out. Are the compatibility issues I should be aware of? That is compounded by the fact that I don't know what kind of fluid is in there, but my bet is some variant of Dexron since it is a GM vehicle.

Re: Fluid for TH350 [Re: dogememe] #4784031
06/11/18 02:51 PM
06/11/18 02:51 PM
Joined: Oct 2012
Posts: 2,469
Staten Island, NY
michaelluscher Offline
michaelluscher  Offline
Joined: Oct 2012
Posts: 2,469
Staten Island, NY
Originally Posted By: dogememe
Originally Posted By: maxdustington
Maxlife


I wouldn't. It's thinner than regular Dex III, right?

I like the OP's idea of buying the cheapest Dex III they can find smile


Where are you getting straight Dex II/III these days

I thought your only choices were Dex-Merc, Dex IV, or Maxlife


'06 Toyota Camry SE V6 3MZ-FE 100k
'01 Mercury Villager Estate VG33E 52k
'06 Ford Taurus SE Vulcan 60k
'13 Chrysler 300 3.6 Pentastar 230k
Re: Fluid for TH350 [Re: Trav] #4784124
06/11/18 04:50 PM
06/11/18 04:50 PM
Joined: Mar 2008
Posts: 7,187
USA
slacktide_bitog Offline
slacktide_bitog  Offline
Joined: Mar 2008
Posts: 7,187
USA
Originally Posted By: Trav
Go with the supertech dex mercon. Made by Pennzoil which for me is preferable to any Valvoline product.

https://www.walmart.com/ip/Super-Tech-Automatic-Transmission-Fluid/20573820


ST ATF is made by Pennzoil? crzy

I thought it was from the same supplier as their motor oil, which comes from XOM, Citgo, Amalie, or WPP depending on region.

Re: Fluid for TH350 [Re: slacktide_bitog] #4784230
06/11/18 06:19 PM
06/11/18 06:19 PM
Joined: Nov 2006
Posts: 20,359
MA, Mittelfranken.de
Trav Offline
Trav  Offline
Joined: Nov 2006
Posts: 20,359
MA, Mittelfranken.de
Scroll down the link to the specs. Good stuff if they didn't bugger the description!

Originally Posted By: Walmart
Specifications
Brand
Pennzoil
Model
550022776
Volume Capacity
5 qt


ASE L1, Master. Deutsch Meisterbrief.
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