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Royal Purple Synchromax Manual Transmission Fluid

100+ Reviews
Our Price

$22.99

  • Item #45004
  • MPN# 1512

  • Market Price $25.99
  • You Save 12% ($3.00)
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Features
  • Smoother shifts
  • Better transmission performance
  • Superior protection
  • Full synthetic
  • Resists breakdown
  • 1-Quart bottle
Description
Protection. Royal Purple Synchromax® is a full synthetic transmission fluid that provides superior wear protection for your Mustang's drivetrain. Synchromax® is formulated with Royal Purple's synthetic, proprietary Synerlec® additive technology, which offers improved shift quality over a wide temperature range and reduced gear noise. Use Royal Purple Synchromax on your Mustang's next fluid change for the cheapest insurance you can get against future transmission breakdowns.

Better Shifts. If your transmission is notchy, rough, or loud but is mechanically fine, a fresh fill of Synchromax® can help smooth things back out. If you have a new Mustang or transmission, changing your fluid to Synchromax can keep your transmission working better - both now and later.

Protects Internal Components. Synchromax® is fully compatible with all types of friction materials and offers excellent corrosion and oxidation protection without affecting the soft metals commonly found in manual transmission synchronizers.

Application. Synchromax® is recommended for manual transmissions that specify an automatic transmission fluid or motor oil. Please note the T-45/T-3650 will take approximately 3.25 quarts to fill the transmission after a full transmission fluid flush.

Mustang Fitment: 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 Details

What's in the Box
  • (1) One Quart bottle
Installation Info
Will it fit my Mustang?
  • Boss 302 - 12, 13
  • Foxbody - 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93
  • Mach 1 - 03, 04
  • V6 - 94, 95, 96, 97, 98, 99, 00, 01, 02, 03, 04, 05, 06, 07, 08, 09, 10, 11, 12, 13, 14
  • Bullitt - 01, 08, 09
  • Cobra - 94, 95, 96, 97, 98, 99, 01, 03, 04
  • GT - 94, 95, 96, 97, 98, 99, 00, 01, 02, 03, 04, 05, 06, 07, 08, 09, 10, 11, 12, 13, 14
  • GT500 - 07, 08, 09, 10, 11, 12

Fits manual transmissions

Most Helpful Reviews Read All Reviews

Overall Rating 4.8/5 Write a Review
5/5
Good stuff

Awesome product, shifts a lot smoother. Pair this up with the applicable gasket to your transmission and you have the perfect excuse to hide in the garage from the wife and improve the drivability of

Read More
Helpful (26) (5)

5/5
Shifts like hot butter

I put some of this in at 70k it was definitely an improvement but it was also the first transmission fluid change. The improvement was noticeable but I can't say that it was from the royal purple and

Read More
Helpful (6) (0)

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Q & A (12 Questions, 12 Answers) Ask a Question

T56 trans fluid I WOULD LIKE TO KNOW WHAT TYPE OF TRANS FLUID DOES THE T56 USE.I HAD A T45 AND USED THE ROYAL PURPLE SYNCHROMAX WITH GOOD RESULTS. NOW I HAVE A T56 AND HAVE BEEN TOLD TOO MANY DIFFERENT VEIWS ON WHAT TO USE

WILLEG89 Year: 1999 Model: Cobra

Question Resolved
Good Question (0) (0)
  • I used the RP synchromax in my T-56 and man did it improve the shifting. The T-56 in the 03-04 Cobra is notorious for not wanting to slide into 3rd at high RPM while speed shifting. More often then not I would end up clashing the gears a touch trying to hit 3rd. I've owned my car since new and it's always been a headache. Since changing to the synchromax I haven't missed a shift. It's amazing the difference just from a fluid change. Between that and the Cobra Bob shifter gaskets it's reduced transmission noise by approximately half. Hope this helps!!

    Helpful (3) (0)

    Best Answer

    RANCOR Year: 2003 Model: Cobra

    Top 250 Contributor

Show 1 more answer

Would this fix...? I'm long over due for a transmission fluid change and most likely going to buy this fluid, but I was wondering if this would fix a noise I have in 5th gear, (rubbing noise that is not constant but more of a lopping pattern noise) Keep up the awesome service AM!

MiniHorse Year: 2001 Model: V6

Question Resolved
Good Question (1) (0)
  • This fluid will quiet down transmission noise to a degree. It really all depends on what's causing the noise. As long as it's not like a bad synchro or something to that effect it should help.

    Helpful (0) (0)

    RANCOR Year: 2003 Model: Cobra

    Top 250 Contributor

Show 4 more answers

how many bottles do i need for 1990 t5 how many bottles do i need and should i buy 1 extra to flush trans

90gt Year: 1990 Model: GT

Question Resolved
Good Question (0) (0)
  • The T5 should use about 2.7 qts. If you want to flush it, then use a transmission flush and follow the directions carefully. Once done, refill with the RP. If you don't already own a manual, buy a Chiltons or Haynes for your model and the capacities are listed in the book.

    Helpful (1) (0)

    Best Answer

    Tracy67 Year: 2004 Model: GT

    Top 50 Contributor

Show 4 more answers

Reviews (100+) Write a Review

  • 5 Stars .88 88%
  • 4 Stars .07 7%
  • 3 Stars .04 4%
  • 2 Stars 0 0%
  • 1 Stars .01 1%
4.8

out of 5 stars

100+ Customers Recommend this Product

Filter By Sort By
  • 5/5 Yes, I recommend this product

    March 08, 2010

    Good stuff

    Awesome product, shifts a lot smoother. Pair this up with the applicable gasket to your transmission and you have the perfect excuse to hide in the garage from the wife and improve the drivability of your Stang.

    Oh For Pony

    Helpful (26) (5)

  • 5/5 Yes, I recommend this product

    August 08, 2011

    Shifts like hot butter

    I put some of this in at 70k it was definitely an improvement but it was also the first transmission fluid change. The improvement was noticeable but I can't say that it was from the royal purple and not from it just being fresh tranny fluid. I have a hurst shifter and with this fluid you can feel every single movement in the shift. I love it that way. I feel more connected like I know how the car is behaving. I would recommend this to anyone else.

    Jared

    Year: 2006 Model: GT Driving Style: Street / Strip

    Helpful (6) (0)

  • 5/5 Yes, I recommend this product

    June 25, 2010

    synchromax

    before my shifter got scorching hot and shifting through gears required a little effort when tranny got warmed up, with synchromax paired up with the short shifter gasket set eliminated my hot shifter and now my tranny shifts smoothly i would deffinately reccomend this product to anyone

    Kolby Riley

    Helpful (9) (2)

  • 5/5 Yes, I recommend this product

    November 14, 2009

    Royal Purple Synchromax

    I have a 03 Mach 1 with a T-3650 and Ford sez 3.8 quarts of fluid, I put in 3.25 quarts and it was not full so I put all 4 quarts in and its just up to the fill hole. The Tranny shift real smoth now, great improvement from the stock fulid.

    Doug Russell

    Year: 2003

    Helpful (10) (3)

  • 5/5 Yes, I recommend this product

    January 28, 2012

    Smooth Operation

    I have the new China made 6speed in my 2011 mustang and I tell you what it was very stiff going into gears cold and hot. This product helped out a lot. I would recommend this to anyone wanting to smooth out there transmission and also add better protection.

    ScottNC

    Year: 2011 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 2 Fuquay Varina, NC

    Helpful (5) (0)

  • 5/5 Yes, I recommend this product

    June 06, 2008

    Purple Syncromax

    Elete transmission fluid for the 3650 Tremec, makes for very smooth shifting and quiet operation of tranny. The price per qt. at American Muscle beats them all!

    Jim

    Helpful (4) (0)

  • 5/5 Yes, I recommend this product

    August 09, 2012

    Smooth

    Made shifting smoother overall and improved but did not really any performance gain. Had to put in a little more than 3.2 quarts in order for it to be full. I just bought a pump with two pipes that sucks in from one pipe and comes out for the other pipe that way I put one in the fluid bottle and one in the fill plug and kept pumping in.

    Zain

    Year: 2010 Model: GT Driving Style: Daily Driver Chicago, IL

    Helpful (3) (0)

  • 5/5 Yes, I recommend this product

    December 13, 2009

    Awesome Lubricant

    This stuff is fantastic! I just put 3.2 QTS of it in my TR3650 and the notchiness has virtually gone away. Not only that, but AM has the best price around; a full $6.00/QT less than my local Pep Boys! AM and RP rock!

    David Forman

    Helpful (3) (0)

  • 5/5 Yes, I recommend this product

    June 22, 2010

    great oil

    works great . the easiest way to refill your trans is to fill a suction gun up with royal purple trans fluid then push the oil out of the suction gun. into the fill hole . and always use rtv thread sealer on drain plug and fill plug thrads to insure no leaks.

    Tim Nelson

    Helpful (8) (4)

  • 5/5 Yes, I recommend this product

    November 29, 2012

    TR3650 Second Gear Hitch

    I have a 08 GT, with pretty much every bolt on there is, bought it new, and it has always had a hitch (a little difficult) going into second. Just changed to RP Synchromax, and what a difference, this oil really made a difference. Hitch completely gone, yes, gone, and all other gears are smooth as silk. I have to tell you, if you haven't changed you Tranny oil, you are really missing out on a quality upgrade. Banging second gear with confidence now, and yes, it has had the Tri-Ax since almost new. Worth every penny boys and girls.

    VaporGT

    Year: 2008 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 2 Jacksonville, FL, USA

    Helpful (2) (0)

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