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3650 Fluid Type, amount ...additive

  • Thread starter Thread starter Jsun3701
  • Start date Start date Dec 28, 2006

Jsun3701

New Member
Dec 10, 2004
124
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0
Virginia
Dec 28, 2006
#1
  • Dec 28, 2006
  • #1
So whats the concensus Mobil 1, Royal purple, Redline, Dexron III. Should we use a petroleum based fluid or a synthetic. And whats the the best additive. Do we put in 3.2 quarts or 3.7 or 3.0. Need some feed back on this one. Also Lucas or some other additive? The manual is a bit cryptic on the subject.
 

Duke309

Member
Oct 15, 2005
90
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6
Orlando, FL
Dec 28, 2006
#2
  • Dec 28, 2006
  • #2
I just changed my tranny fluid today, tremec recommends dextron/mercon III at the quantity of 3.0 to 3.2 liters. I did around 3.4 and it shifts much smoother.
 

Jsun3701

New Member
Dec 10, 2004
124
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0
Virginia
Dec 28, 2006
#3
  • Dec 28, 2006
  • #3
So you went with the petroleum based and not the Mobil 1 synthetic.
 

Rickey_Bobby

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Nov 8, 2006
332
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Sarasota, FL
Dec 28, 2006
#4
  • Dec 28, 2006
  • #4
I'm using royal purple and havn't noticed any differance in the tranny's shifting over the cheaper dextron III.
 

Jsun3701

New Member
Dec 10, 2004
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Virginia
Dec 28, 2006
#5
  • Dec 28, 2006
  • #5
How much are you putting in?
 
S

Saleen4971

New Member
Mar 26, 2003
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Setauket, LI
Dec 28, 2006
#6
  • Dec 28, 2006
  • #6
3.5 quarts of GM synchromesh here and love it. noticed a much smoother feel
 

JOEGTS

New Member
Jul 23, 2005
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Port Saint Lucie, FL
Dec 28, 2006
#7
  • Dec 28, 2006
  • #7
I just changed mine out yesterday for the third time since buying it in September. This the first mustang that I've owned without a T5. Its an 03 Mach1. The car will sit sometimes for 2-3 weeks without being driven. I noticed that the car is very hard to shift when cold and has been sitting for a long duration. I first tried synthetic with not much difference. I then used regular DIII and it was very sticky and would even grind on its first shift into second after sitting. This car only has 7700 babied miles on it. I read a thread on the registry about using one full bottle of Lucas tranny fix and the rest Mobil1 ATF totaling together 3.2QTS. I only drove the car maybe 2 miles after the fluid change and it seemed to be much smoother (Hopefully I'm Not Imagining It) than before. After the short ride you could move through the gears without feeling anything. The real test will be to see how the trans shifts after the car sits a week or two. I'll post my findings in a week or so.
 

Jsun3701

New Member
Dec 10, 2004
124
0
0
Virginia
Dec 29, 2006
#8
  • Dec 29, 2006
  • #8
Right guys, so it seems like synthetic is the way. At 3.2-3.4 quarts with a little Lucas Oil. I also heard that Its way easier to put the Lucas oil in the tranny if you heat the bottle up first.
 

JOEGTS

New Member
Jul 23, 2005
153
0
0
Port Saint Lucie, FL
Dec 29, 2006
#9
  • Dec 29, 2006
  • #9
Jsun3701 said:
Right guys, so it seems like synthetic is the way. At 3.2-3.4 quarts with a little Lucas Oil. I also heard that Its way easier to put the Lucas oil in the tranny if you heat the bottle up first.
Click to expand...
If you mix the Lucas additive with the ATF in a jug first it will be much easier to use.
 

JOEGTS

New Member
Jul 23, 2005
153
0
0
Port Saint Lucie, FL
Jan 1, 2007
#10
  • Jan 1, 2007
  • #10
I just drove the car after it sat since Wednesday. The car shifted great. I am sold on the Lucas tranny fix. The car did not feel sticky on the first to second shift when cold.
 

twogts4us

15 Year Member
Apr 1, 2004
4,188
12
79
Dunedin, FL
Jan 1, 2007
#11
  • Jan 1, 2007
  • #11
JOEGTS said:
I just changed mine out yesterday for the third time since buying it in September. This the first mustang that I've owned without a T5. Its an 03 Mach1. The car will sit sometimes for 2-3 weeks without being driven. I noticed that the car is very hard to shift when cold and has been sitting for a long duration. I first tried synthetic with not much difference. I then used regular DIII and it was very sticky and would even grind on its first shift into second after sitting. This car only has 7700 babied miles on it. I read a thread on the registry about using one full bottle of Lucas tranny fix and the rest Mobil1 ATF totaling together 3.2QTS. I only drove the car maybe 2 miles after the fluid change and it seemed to be much smoother (Hopefully I'm Not Imagining It) than before. After the short ride you could move through the gears without feeling anything. The real test will be to see how the trans shifts after the car sits a week or two. I'll post my findings in a week or so.
Click to expand...
The TR-3650 is just 'tighter' by nature...I row thru the gears every morning before pulling it out of the garage. The T-45 could care less, but the 3650 is more sensitive..I guess...in the end, it (the 3650) is much smoother, more predictable...it's notchy, but precise.
 
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