Manual transmition fluid - which one?
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Manual transmition fluid - which one?
Can anyone give me a link to some good Manual Transmition Fluid for Mustang GT or at lest name and brand, reference code. What color it should be? I was thinking that it is Dexron III ATF with Mercon spec - so Red one. But when I check the level it is clear one so what is that?
#2
I've been using Royal Purple Synchromax in my manual trans for a couple thousand miles and I noticed an improvement in shift feel and MPG. I also changed my rear gear lube at the same time to the Royal Purple stuff. I get 23.6 MPG now and before I got 22.5.
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By the Rear Gear you mean you changed for that one: Max Gear 75w-140? http://www.royalpurple.com/gear-oil.html
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Ok last question about Rear Gear Oil. Did you add to that some Friction Modifier XL-3 - 4oz. as the Mustang guide suggest or Royal Purple Max Gear do not need that?
Thanks a lot for your help.
Thanks a lot for your help.
#8
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I use Redline High Temp ATF in my 07's TR-3650. For the rear-axle, I am using the factory-fill gear oil in the Stang. In the other Fords, I always use Redline gear oils.
#11
I changed my transmission and differential fluid 2 weeks ago. I used 3qts of Royal Purple Synchromax for the tranny. 2qts of Royal Purple Max-Gear 75w140 + XL-3 in the diff. I had heard issues with just relying on the friction modifier built into the gear oil so I added the 4oz XL-3 to the mix just in case. I think my mileage went up slightly .. hard to say. There was a huge difference in the way the shifter goes through the transmission now. Really great stuff.
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I changed my transmission and differential fluid 2 weeks ago. I used 3qts of Royal Purple Synchromax for the tranny. 2qts of Royal Purple Max-Gear 75w140 + XL-3 in the diff. I had heard issues with just relying on the friction modifier built into the gear oil so I added the 4oz XL-3 to the mix just in case. I think my mileage went up slightly .. hard to say. There was a huge difference in the way the shifter goes through the transmission now. Really great stuff.
BTW what you think about that KENDALL Modifier? Did any one heard about that?
http://cgi.ebay.com/ebaymotors/Posi-...mZ320259885179
#14
You need thread sealant and Loctite for the plugs. I added the 3qts back in via a hose run down the shifter hole into the fill hole of the tranny. Granted it's a little scary squeezing a bottle of Synchromax into a hose(3ft should do it) inside your interior. Just be careful. The level of the fluid should be 1/2 inch below the fill hole. I used a small allen wrench to place in the fill hole and measure with. Be careful not to drop the wrench in . 3 quarts of Synchromax was exactly the right amount for me. I did have a 4th bottle just in case.
Its rather easy to change the tranny, the differential is another story. It's easy as well but requires more time to clean the inside out and remove all the old RTV. The effort put in here pays off by not having any leaks.
Last edited by gkaufman; 6/6/08 at 06:27 AM.
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Mobil 1 Synthetic ATF is another alternative. Synthetics are always better than non-synthetics in oil and transmission fluid. http://www.mobiloil.com/USA-English/...hetic_ATF.aspx
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Adding more friction modified to an oil already formulated for a posi is probably overkill and may even be detrimental to the differential clutch pack . More is not always better, other wise they would recommend putting in 2 or 3 bottles of that stuff.
This trans does have a drain and fill plug (see attached).
This trans does have a drain and fill plug (see attached).
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Adding more friction modified to an oil already formulated for a posi is probably overkill and may even be detrimental to the differential clutch pack . More is not always better, other wise they would recommend putting in 2 or 3 bottles of that stuff.
This trans does have a drain and fill plug (see attached).
This trans does have a drain and fill plug (see attached).
#18
Doubtful. The only "detrimental" thing would be that the posi doesnt lock as hard. Which isnt true either since it seems as though its locking harder now after my fluid change.
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Ordered today Roayal Purple set of oils for trany, differential and for engine as well - lets see if that is really such good oil as everybody says.
Thanks all for help. Of course I will and XL-3 to rear differential friction modifier as well.
Thanks all for help. Of course I will and XL-3 to rear differential friction modifier as well.
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