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post #1 of 5 Old 07-22-2009, 12:09 PM Thread Starter
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Transmission oil

I am changing the transmission oil on my truck, which oil do you suggest; Motorcraft ATF Mercon V or Pennzoil ATF Mercon? I like to use Motorcraft ATF Mercon but we know this oil has been phased out and hard to find. Also, when I took the oil pan, I noticed there were some metal shavings around the magnet in the pan…Where are they coming from and would they be sign of problems or concern? The transmission otherwise shifts well and I have had no issues with it so far.
Thanks in advance..

1999 FORD F 350 CREW CAB, LONG BED DUALLY
7.3 PSD, AUTO, 78,500 miles.
AIS Severe duty intake system
Rear Gear ratio 3.73
Isspro Trans, Boost, Pyro, gaugae [A Pillar]
MBRP 4 turbo back exhaust
Everthing else is stock.

2009 VW JETTA TDI 6 spd manual.
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post #2 of 5 Old 07-22-2009, 02:08 PM
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first some metal shavings are normal. Was the tranny rebuilt? Because theres an seal that doesnt hold up to synthetic fluid unless the rebuild it. When i had my tranni flushed before i rebuilt it, the fluid was dark brown/black. Bas sign so 5 months later my tc was slipping dropped it and now im running full synthic moblie one atf nice stuff and uprgaded the cooler.

Change the oil filter,clean the magnet run what was in it before if unknown then try to find out what the privous owner had in her.

Hoped this helped

1996 F350 4x4 Powerstroke Diesel
Afe Stage 2
3 Inch Downpipe,Cat-Delete,90 degree elbow(ss)
Diy Exhust Brake
Hpx Crossover
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post #3 of 5 Old 07-22-2009, 06:57 PM Thread Starter
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no it's not rebuilt, the color of the oil was red, the reason I took the oil pan out because it was leaking, so i bought a new oil gasket and filter from the dealer, so I guess I will try full synthetic mobile atf. Thanks for the info.

1999 FORD F 350 CREW CAB, LONG BED DUALLY
7.3 PSD, AUTO, 78,500 miles.
AIS Severe duty intake system
Rear Gear ratio 3.73
Isspro Trans, Boost, Pyro, gaugae [A Pillar]
MBRP 4 turbo back exhaust
Everthing else is stock.

2009 VW JETTA TDI 6 spd manual.
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post #4 of 5 Old 07-24-2009, 03:15 AM
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i wouldnt because you dont have the updated seal in it. It might casue a leak napa is pretty good the thicker fluid is sometimes better.

1996 F350 4x4 Powerstroke Diesel
Afe Stage 2
3 Inch Downpipe,Cat-Delete,90 degree elbow(ss)
Diy Exhust Brake
Hpx Crossover
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post #5 of 5 Old 07-24-2009, 09:09 PM
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If you have a Hydrotex dealer in your area I humbly suggest talking to him about their Hy-torque ATF. It is a non synthetic pure-base stuff, my trans guy swears by it. I have it in my truck and saw a 15 degree drop in the temp when towing. We used to have an old motorhome with a 454/Turbo 400 and a mechanical gauge. We switched it over and I saw an honest to pete 20* drop in trans temps.
That sold me.
It is in all of my family's automatics.
FWIW

1997 F-350 4x4 CC LB, Original owner. About 88k on her.
Arrowcraft DRW conversion,Alcoas and Michelins, Hypermax D.P into 4 inch system, Tymar intake, Tru Cool Trans cooler, ATS Converter, built E40D, Mag Hytec trans and Rear Diff covers, Rancho 9000's, ORU Shackle Reverse, Pillar Gauges, Beans D66 Turbo, Banks IC. PHP FU Flex 2 6 pos. chip. Terminator Scan Gauge & Terminator Modded 17* HPOP
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