Transmission fluid question (Mobil 1 ATF) ?

[Dr.John]

Does any one here have experience using synthetic ATF in their 1:1.25 transmissions?
Mobil 1 ATF complies with Dexron III Mercon, so in theory, should be fine.

[wakefun]

My transmission (2000 V-Drive) has always been a little noisy (emits a high pitched wine at certain speeds) and was wondering if switching to a synthetic like Mobil 1 may help to quite it down some. Don't mean to highjack this tread but felt this was in the ballpark.
Thanks.

[ag4ever]

When i last changed mine out, I put in the Mobil 1, and it has been doing just fine, but i only have like 10 hours on it too.

[Dr.John]

When i last changed mine out, I put in the Mobil 1, and it has been doing just fine, but i only have like 10 hours on it too.

So you didn't notice anything different? Noise, etc.?

[skinautique]

do you have the power plus transmission? Put the Mobil 1 ATF in there and you will be fine. If it is the older style transmission with the oil in it, I would keep using that

[Dr.John]

do you have the power plus transmission? Put the Mobil 1 ATF in there and you will be fine. If it is the older style transmission with the oil in it, I would keep using that

It is the standard 1.23:1 ('01) PCM transmission.

[skinautique]

Yeah it is a 1.23:1 transmission. Use Mobil 1 ATF and you are all set.

[ag4ever]

I have a SAN, so the noise is fairly low compaired to the DD, and still I really could not hear a big difference if any. I think the biggest benifit if any is the synthetic's ability to withstand higher heat before breaking down. Bu then aagain, if the trans gets hot enough to break down dino based tranny fluid, I have other problems that are much bigger than just the fluid itself. On the other hand since there is such a samll amount in the tranny, I figure an extra $5-10 is not going to break the bank.

Now my truck, '02 F-250, uses 20 quarts, and I also run the mobil 1 in that to the tune of $100 fluid change when I do it myself. But there it is much more critical as the truck's torque converter can dump much more heat in the fluid than the boat transmission could ever make. Plus the boat's transmission is water cooled, while the truck only has a fairly small air to oil cooler.

[Jesse1]

I have used Amsoil synthetic trans fluid in my 2000 Sport Nautique since the first fluid change. Also use Amsoil 15w40 Heavy Duty Marine oil in the GT40 engine. This was advised by my dealer.

[SWCC-PART-MAN]

in any of the tranny's all the way back to the borg-warner 1:1 ratios all run dexron. here at southwest correct craft we use amsoil and penz (penz not my first choice personally) but any manufact. with dexron specs is o.k. to run.
P.S. change all of your fluids at the same time for your own sake. so you can be on a regular schedule and not wondering...when did i change my v-drive fluids? their all done at the same time. plus oil becomes acidic over time (which can cause major damage to your internal parts)so change them all prior to winter lay-up.
jason

[Dr.John]

I just talked with PCM C/S. For PCM Ford engines (i.e. GT40, etc.) it's non-synthetic oils and fluids, period!

For the transmission, it's dino fluid/oil, period! Either Dexron III or 20W20.

When asked.....WHY? "Because there are internal parts that are not compatable with synthetics".
When asked "what would happen if synthetics are used? " eventually leaks and slippage would occur"!

I'm still under warranty, so me thinks I will use dino until warranty expires! :cry:

[j2nh]

You could spend a lifetime going over which is better.
Lots of excellent articles on the web concerning dino vs synthetic. Bottom line is that they are both motor oils. Major difference is how they got to a specific viscosity. 40 weight dino motor oil is an average. Some of the oil from the batch is heavier and some is lighter. Synthetic is "built" to a specific viscosity and as a result the ranges of higher than and lower than are much lower. Advantage to dino when it comes to "leaks" is that the heavier components (wax) will prevent leaking.
Impossible to believe that PCM would have concerns about "leaks" or "slipping" in such a well manufactured engine.
My preference, Mobil 1. Came as the standard fill on my Porsche and my wife's Mercedes. Too each his own.