trans fluid recommendations
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Senior User
Joined: Nov 2006
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trans fluid recommendations
As mentioned prior I am getting ready to do a T/C swap, add a 6.0 cooler, valve body, etc. I want some recommendations on new trans fluid. I have always used Mobil 1 Syn. in all my other vehicles with no problems. I have read a lot about Schaffers oil, where can I get it and is it superior to others on the market like Mobil 1? Also I dont have the owners manual to my truck, so I am unsure of what type to get as well I.E. Mercon, mercon V, ATF, etc.... Thanks for the help! BTW truck is an early 99.
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Joined: Oct 2005
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I got my fluid flushed not to long ago. I was going to use Royal Purple Synthetic but was recomended by someone on this site to go with the Schaffers and couldn't be happier. It was around 30k miles sence the last flush and now my tranny shifts way better. Its hard to explain on the internet but its just smoooother. I ordered the Schaffers Syn Trans Fluid from Beans Diesel Performance in a 5 gal drum. You could use this LINK if you want to do it yourself. I just took my truck into my diesel mech because i didn't have any time.
Post Fiend
Joined: Feb 2006
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From: Middle Tennessee
Originally Posted by rpss4844
huh....dont guess anyone here has ever changed transmission fluid..... not even the post *****s want to chime in....this is strange......
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i was hoping for some reaction out of that.... heck i started this on the 20th and only got 1 reply. i still am unsure of what type to use. I have no owners manul to tell. a mechanic told me to use Mercon V since that is what Ford is going to. Is Mercon V safe to use? Is it superior to what was originally reccomended?
Post Fiend
Joined: Feb 2006
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From: Middle Tennessee
Do you plan to tow heavy? If not, then mercon is the way to go. I will likely get flamed for that but you have to think about these things. Unless you think you can overheat the mercon V, (yes mercon V), then go with that. Of course, the latest from FoMoCo is that mercon V is fully compatible with Mercon but just recently there was a big hullabaloo about making sure you drain all the old.
Now they say it will mix. What do you think? I will be flushing all of mine. I may go synthetic and I may not. Likely not but who knows?
Now they say it will mix. What do you think? I will be flushing all of mine. I may go synthetic and I may not. Likely not but who knows?
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Joined: Nov 2006
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From: West Australia
2 days ago
I did mine 2 days ago.
I went to the local autoparts store and asked for Mercon ATF!
The sheila scratched her head (I swearI saw knits jump when she did!)...and looked at the ceiling! She got a book out of the brands they sell and found the recommended one for my brand, year, model, PSD auto trans!
It was Castrol Dextron 111, from memory so I bought a 5 gallon can and a one gallon plastic bottle for luck! ($180 Aust later) I was good to go!
Seems to have worked so far (200 miles this weekend!). Changes are smoother, and seems quieter!
I'm happy!
I've been told that BTS suggest synthetic is too slippery for the clutch packs and just lets em wear out faster!
Hard to know what to believe some days!
Cheers!
I went to the local autoparts store and asked for Mercon ATF!
The sheila scratched her head (I swearI saw knits jump when she did!)...and looked at the ceiling! She got a book out of the brands they sell and found the recommended one for my brand, year, model, PSD auto trans!
It was Castrol Dextron 111, from memory so I bought a 5 gallon can and a one gallon plastic bottle for luck! ($180 Aust later) I was good to go!
Seems to have worked so far (200 miles this weekend!). Changes are smoother, and seems quieter!
I'm happy!
I've been told that BTS suggest synthetic is too slippery for the clutch packs and just lets em wear out faster!
Hard to know what to believe some days!
Cheers!
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Post Fiend
Joined: Feb 2006
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From: Middle Tennessee
Originally Posted by Flywest
I've been told that BTS suggest synthetic is too slippery for the clutch packs and just lets em wear out faster!
Hard to know what to believe some days!
Cheers!
At any rate, I submit this for your review MAGNETRON.
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Senior User
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i do tow a lot probably %80 of the time, but it is usually never very heavy only 6k +/-. but there may come a day when i do to something heavier.... i am doing a complete T/C swap, VB, 6.0 cooler, front pump, etc.... so I am looking for the best stuff to go with. thanks for the reply's, keep 'em coming!
Post Fiend
Joined: Feb 2006
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From: Middle Tennessee
Originally Posted by rpss4844
As mentioned prior I am getting ready to do a T/C swap, add a 6.0 cooler, valve body, etc.
Post Fiend
Joined: Jun 2006
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From: White Mnt's,New Hampshire
Originally Posted by Tenn01PSD350
I thought they recommended schaffers. I could be wrong.
At any rate, I submit this for your review MAGNETRON.
At any rate, I submit this for your review MAGNETRON.
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Joined: Nov 2006
Posts: 245
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From: West Australia
Hi Tenn
I have loooked at these before, however I elected to go with the bypass style filter from LIPD in which I have some idea of the micron filter measurements and the safety of a bypass if things go wrong!
I don't want restriction of the fluid and I do want it as clean as possible!
Can't filter much with it tho if it doesn't get here soon - ordered Dec 17 and the postal pixies in Canada seem to have put it on a sailboat from there to here by the look!!
I guess It will get here one day! Probably the day the transmission dies!
This is the one I bought!
Cheers!
I don't want restriction of the fluid and I do want it as clean as possible!
Can't filter much with it tho if it doesn't get here soon - ordered Dec 17 and the postal pixies in Canada seem to have put it on a sailboat from there to here by the look!!
I guess It will get here one day! Probably the day the transmission dies!
This is the one I bought!
Cheers!
Senior User
Joined: Jul 2003
Posts: 491
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From: Spicewood, TX.
I will usually just break them in on regular Mercon, then after break-in switch to schaefers Syn ATF.
Any new clutchs need to break in, and then some people think that the SYn is too slippery to use for high power...
Any new clutchs need to break in, and then some people think that the SYn is too slippery to use for high power...