Recent Topics
Coupon for Fram Ultra (Amazon)
by PolarisX
03/24/17 11:53 PM
Mobil 1 ESP 5W-30, 4,810 miles, 2016 Audi A3 2.0T
by Finklejag
03/24/17 11:51 PM
Tell me about 2011+ Mustang GT convertibles
by dareo
03/24/17 11:41 PM
Type of LSD in 2015 Camaro
by asand1
03/24/17 11:28 PM
Transmission cooler leak = bad!
by gregk24
03/24/17 10:16 PM
Buying oil online from Walmart?
by Dominic
03/24/17 09:59 PM
Air Operated Grease Gun
by tig1
03/24/17 09:34 PM
Women's AFL football - grand final
by Shannow
03/24/17 09:16 PM
VR-1 20W-50 $1/Qt at Autozone
by bunnspecial
03/24/17 08:46 PM
4 pack of red Heet at Walmart - $5.00
by 69GTX
03/24/17 08:33 PM
Oil for a 2012 vw jetty 2.5 gas motor
by A1O
03/24/17 08:24 PM
Fram TG7317 5k miles 06 Accord V6
by salcuta88
03/24/17 08:14 PM
Redline MTL MTF for sale (Markham, ON)
by dgunay
03/24/17 08:06 PM
XG7317 - M1-110 oil filters for sale (Markham, ON)
by dgunay
03/24/17 08:00 PM
UK grid already feeling the effect of electric car
by Shannow
03/24/17 07:48 PM
Fram Ultra XG9641 Cartridge! 14K Miles
by CharlieJ
03/24/17 07:35 PM
General Altimax RT43 @ Walmart?
by ron350
03/24/17 07:30 PM
For you S. OH people-NAPA Gold sale (1st time!)
by bullwinkle
03/24/17 07:19 PM
Can a wheel be bent by over-torqueing lug nuts?
by zorobabel
03/24/17 06:06 PM
Hastings LF142 Cut Open
by Canadastang
03/24/17 06:01 PM
Newest Members
fourlowe, markings67, KRT, XJSoldier, Hkynut99
60959 Registered Users
Who's Online
17 registered (bmod305, Drew99GT, E365, 4 invisible), 1033 Guests and 13 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
60959 Members
66 Forums
262768 Topics
4338168 Posts

Max Online: 3590 @ 01/24/17 08:07 PM
Donate to BITOG
Topic Options
#804039 - 01/05/07 10:50 PM What is best Dexron III/ Mercon dino ATF?
djmc Offline


Registered: 12/12/06
Posts: 62
Loc: tx, us
As I am planning doing regular (30k-50k) flushes for my tranny, I'm looking for the best dino ATF (Dexron III/Mercon).
Currently I'm looking at Valvoline Maxlife and Pennzoil HM ATF, where Pennzoil seems to be a little better, I read in another post (because it's ONLY DexronIII)

Any recommendation is welcome.

Driving conditions:
'97 Volvo 850 non turbo, 150k miles, just had first flush ever.
Short trips (30 miles/day), a lot of stop and go in hot climate (Texas).

Top
#804040 - 01/06/07 05:18 AM Re: What is best Dexron III/ Mercon dino ATF? [Re: djmc]
T-Keith Offline


Registered: 01/20/04
Posts: 4869
Loc: MN
I wasn't very happy with valvoline when I used it. It was always burnt smelling and brown after less then a year. I've been using Chevron's DexIII and am very happy. It's at least group II+ oil. (not sure if Maxlife is yet or not) Plus it's around $2.09.

my 2 cents.
_________________________
'03 Snaab 9-3 210,000
'11 Enclave 140,000

Top
#804041 - 01/06/07 08:08 PM Re: What is best Dexron III/ Mercon dino ATF? [Re: T-Keith]
Brett Miller Offline


Registered: 09/09/03
Posts: 2636
Loc: Arizona
Pennzoil makes a great Dexron III/Mercon ATF.

Top
#804042 - 01/06/07 08:47 PM Re: What is best Dexron III/ Mercon dino ATF? [Re: Brett Miller]
djmc Offline


Registered: 12/12/06
Posts: 62
Loc: tx, us
Thanks for your replies.

Now Mercon V is out there, which is also DexronIII/Mercon approved, should I go with that? Is this even better, or should I just stick with DexronIII/Mercon?
My manufacturer specifies Dexron IIE/III - Mercon.

Top
#804043 - 01/07/07 03:20 AM Re: What is best Dexron III/ Mercon dino ATF? [Re: djmc]
djmc Offline


Registered: 12/12/06
Posts: 62
Loc: tx, us
Additional info: I think that my tranny has higher operating temperatures that average, because I flushed ones with MaxLife and that turned brown in a few days. At this moment I have Coastal in there but is turning darker already after 2 weeks. (Coastal because it's cheap and good for a cleaning flush)
My radiator has just been flushed and has fresh Zerex G05 in there (50/50), so that should be OK.
I checked with my specialized Volvo repair place that the 'Check Engine' light should come on in case the tranny fluid gets too hot. There were no fault codes for the oil temp sensor in the tranny.

So I'm looking for a tranny fluid who can handle my higher than everage operating temperatures.

Top
#804044 - 01/07/07 04:34 AM Re: What is best Dexron III/ Mercon dino ATF? [Re: djmc]
porcupine73 Offline


Registered: 10/06/05
Posts: 664
Loc: Buffalo, NY
Sounds like you need something that is really oxidation resistant. Many vehicles have ATF temp warnings, but I'd guess those don't come on until maybe 250 deg. F. or higher.

Top
#804045 - 01/07/07 05:01 AM Re: What is best Dexron III/ Mercon dino ATF? [Re: porcupine73]
bmwtechguy Offline


Registered: 06/15/04
Posts: 2564
Loc: South Carolina
If your application is running high temps, use a synthetic fluid such as Mobil 1 or Amsoil ATF. But most importantly, add some additional cooling such as a large aux. fluid cooler. This will make any fluid last longer in service. Otherwise, just about any dino fluid will be ruined in 10-20k miles in severe service such as high temp operation. It's not just the fluid that takes a beating in high temps, but seals and other internals suffer.

Top
#804046 - 01/07/07 05:09 AM Re: What is best Dexron III/ Mercon dino ATF? [Re: bmwtechguy]
bmwtechguy Offline


Registered: 06/15/04
Posts: 2564
Loc: South Carolina
Forgot to add that I drive a car every day that has well over 100k miles on the synthetic ATF. I even tow a boat and other trailers with this vehicle in the hot summer heat here. The fluid still looks and smells new and the transmission shifts well with over 240k miles on it. And yes, it has a large aux. cooler on it too. It is difficult to drop the pan on this 91 Caprice due to a badly designed crossbar at the rear of the trans.

Top