Just trying to figure this out. Is Transynd really that much better? Costs around $32.00 to $35.00 a gallon around here. Mobil 1 synthetic ATF is considerably cheaper and easier to get. Seems Mobils synthetic oils are top notch so why wouldn't the ATF be as well? Anyone have the inside skinny on this subject?

I use Amsoil Universal ATF Synthetic in anything that I change and have had great success with it. Amsoil says it is compatible with almost every atf spec you can name, too many to list here.


They also list a racing fluid for special built drag trans that usually run the old type F fluid and another fluid for heavy tractors, etc.


Recently they came out with a new fluid to replace Transynd. In their dealer magazine they state that this fluid is formulated to perform and test equal to Transynd at a lower cost. Their claim is that Allison and the makers of Transynd, {I think it was/is Castrol} have teamed up and not allowed anyone else access to the test machine they used to certify Transynd in order to keep the price so high.


So Amsoil came with their own formulation and their own warranty against any problems from using it.


But, they continue on to state that any trans which can use Dex III, MerV, etc. should continue to use the Universal ATF, which is fully compatible. They state the new fluid is meant solely to compete with Transynd in applications that require it, at a lower price.


I have no experience with Mobil 1 ATF, but they make good motor oil. so it seems to me that it should be in the same situation as Amsoil.


I know Amsoil ATF is going in my Allison when it needs changing, only 12k now.

I did a complete flush and addded Mobil-1 to my Allison and it's running smooth and quiet - no problems after over 10k miles (no towing though). I also used AMSOIL ATF in my 98 K3500/6.5 4L80E with good results towing a 7klb 5th wheel trailer. I have no direct expereince but some have reported Allison slippage with both the Mobil-1 and AMSOIL when towing heavy loads - maybe with power mods (??). Maybe the transynd is better in this situation (?) Hopefully someone else can clarify this.


http://www.dieselplace.com/forum/smileys/Geek.gifEdited by: jbplock

I remember a while back on "another" page someone running into trouble using both M1 ATF, & Scamsoil ATF. Especially with Limp Mode problems, and "friction modifiers"


Not starting a fight or anything, But I just got 4 gallons of Transyd for $27 a gallon. Now if your tranny should fail and they see your running


Mobil 1/Amsoil- Your screwed, are they allowable by Allison to be used? probably...Wanna risk it? Me.....Nope


Transyd- Made by Castrol for Allison(exclusively) Think your gonna have any warranty issues ???? Nope, Transyd comes in the Med. duty trucks with 1000,2000,2400 series trannys. Wonder why they are warrantied to alot higher mileage then ours? Synthetic Alli approved


You spent 40K on a truck.......whats 28 bucks gonna cost you


Its like these people running Amsoil 15-40, Only one 15-40.... marine grade oil is API certified by Amsoil. Others well your on your own


Your truck, your risk.


Personally Ill stick with an API registered oil, And Transyd


$40,000 and maybe 20 bucks difference seems pretty penny wise and pound foolish to me.


But at least you brought this up first, im not flaming ya use Transyd


Bill


Go to your nearest Ally dealer, its pretty cheap to get Transyd, and your tranny will thank you http://www.dieselplace.com/forum/smileys/Clap.gif

ChevyHDman Mobil Syn ATF is fine under the warranty it meets all specs. It is just synthetic DexronIII and should be superior to standard dino ATF. I am wondering if anyone knows what the difference between Mobil and Transynd is. Edited by: BigdaddyG

The only fluid I heard that "limped" a tranny under additional power, I believe the HJ was Amsoil Synthetic .... Reason was friction additives were not correct ... Unless you heard something different ,,,


Amsoil has since came out with a different fluid,Amsoil Torque Drive for the Allison transmission ....


I'm running Mobil ATF dino in my Suncoast tranny and putting the coal to it ....


Allison's recommendations on fluid for the GM pick up is



<TABLE width="100%">
<T>
<TR>
<TD colSpan=2><A name=98></a>Q. Automatic Transmission Fluid (ATF) - What type of Transmission fluid can I use? </a></TD></TR>
<TR>
<TD width="5%"></TD>
<TD width="95%">A. Transmission fluids licensed by General Motors to use the trademark DEXTRON III are required in the Allison 1000 Series™ transmission. </TD></TR></T></TABLE>





Allison (http://www.allisontransmission.com/service/faq/index.jsp?CategoryID=11#98) ..... Some other info Fluid specs (http://www.allisontransmission.com/documents/product/13-TR-90,%20Rev%20E.pdf) ....


With that synthetic is for extended drain intervals and was the only fluid Allison would recognize with any extended warranty claim ... Also in high heat applications where the transmission will benefit with a synthetic .... This includes the 1000 series transmission ....


Since then they, Allison has softened their stance on recommended fluids for extended warranty coverage, not that it matters for GM pick ups ....


A listing of Allison ATF (https://www.fuelsurvey.swri.org/C4/C4ApprovedFluidsListing.asp) approved DEX III fluids .....


As always you decide .... Edited by: Mackin

I don't want to make this sound like an angry response , but when you use clever little "mispellings" and the innuedos that have been used in this topic by some, it's difficult to not get angry.


Amsoil states that their new fluid is for those who are not in an extended warranty program with Allison {not applicable to our trucks}, as the warranty is a contract between Allison and the owner, which includes the use of Transynd. They openly state that any owner who has this extended warranty should stay with Transynd.


Amsoil further states, as I wrote earlier, that in applications which are authorized to use Dex III {this is where our trucks come in}, that it is better to use the Amsoil Universal ATF than to use the new fluid.


I think this is a significant point when Amsoil sells both and makes a specific reccomendation as to which to use.


I personally, and many of my customers, have had great success with eliminating tor. conv. lockup clutch shudder using Amsoil ATF. It cured this problem in every instance I and my customers have tried where this condition had not been ignored to the point of causing internal mechanical damage.


This shudder comes from a thermal breakdown of the fluid causing a deposit on the friction surfaces of the lockup clutch. Amsoil claims a 300% increase in resistance to thermal breakdown as compared to DexIII specs. I have ATF in my '94 Lincoln MK8, which has the 4.6 DOHC 32 valve engine. It cured a persistent case of tc shudder, and has been subjected to many full throttle 6000 rpm shifts, both in enthusiastic daily driving and trips to the dragstrip.


Please pardon the length of this post, but I just can't let some things go unchallenged.

After watching just about everyone I know and others I don't know fry their snowmobile engines almost as soon as they switched to Amsoil, you couldn't make me run any of their fluids in anything I own. As far as what fluid to run in your Allison I'd do what Allison recommends. If your only keeping it a few years save your money and run what it comes with, regular atf. If your keeping it forever spend the extra $ and run the fluid that was designed especially for the Allison, Transynd. Seems simple enough.

GMCTRUCK, I expect you could find just as many people who had "fried" engines of all sorts with just about any brand of oil you want to single out.


But the question is: how much of it was really the fault of the oil and how much of it was due to an already existing mechanical problem, or ineptitude or just plain stupidity by the owner? How many times was the engine over revved? How much too lean was the air/fuel ratio? Was enough oil used in a premix on a 2 cyucle? Was the spark advance too high? I could go on, but I think you get my drift.


I've been using Amsoil for close to 30 years, never had a problem, never seen a single one of their many products fail to live up to Amsoil's claim for it when used correctly.


As for 2 cycle engines like your snowmobiles, we don't have those down here in GA foe obvious reasons. But, I've been using Amsoil 100:1 2 cycle oil in the same Polan chain saw for 25 years. And there's not much of anything that is subjected to more abuse than a chain saw.


IMHO, Amsoil products are good, but like anything out there for sale it is not idiot proof.

GMC truck, since Amsoil warranties any engine damage caused by use of their fluids, from your statement, they are buying poeple new engines right and left. Sorry, but since this is not the case, I must assume such failures are NOT result of using Amsoil products. Of course, if you wish to post the evidense of your claims of such poor performance of Amsoil fluids, perhaps I/we can change our opinion of that companies products. Otherwise such would at least appear to be opinion or conjecture. IMHO, it is among the best fluids available.

In GMCTRUCK's defense, I have to say that I'm not convinced on Amsoil either!! I know some people that have tried it, and fried their motors too!! All motors were running fine, but onced switched to Amsoil they blew within weeks. Granted one was an older Ford Ranger with over 200K miles, and the other were a chipper and a generator. Again they had some hours on them, but were running great, not burning a drop of oil until switched to Amsoil. My opinion is that if you use Amsoil from the beginning, its fine, but it seems to destroy older motors. The people I know that had the problems were not about to test their motors and try to prove that it was the oil's fault!! They were older motors, and not worth the time and $$$$ to prove Amsoil wrong so that they can replace a 200K mile motor!!





Maybe it was coincidence, maybe the Amsoil had nothing to do with it. I know another guy that is an Amsoil dealer and swears by the stuff!! He uses it in everything he has, including his Dmax and hasn't had a problem (except for his 89 blazer that he switched to Amsoil at 150K miles and it started burning oil, but he SWEARS it wasn't the Amsoil.....said it's just old!http://www.dieselplace.com/forum/smileys/Wink.gif)


Anyway, I put the Amsoil gear oil in my Dmax, but will use Transynd when ready, and Rotella in the motor!


I also have a Ford Escape beater for work with a 4 banger and a 5 speed that I think I'm going to try the Amsoil in. It only has 10K miles, and the Amsoil 5W-20 IS API certified, so I figure if I have any problems it will be covered under warranty and Ford can't give me a problem because the oil meets all of their requirements and is certified!


If Amsoil's diesel oil (15w-40) was certified I would use it too, but in my opinion, if the company can't spend the money to get API approved, then I can't see them jumping to pay for my blown motor unless I have some REAL hard proof it was their fault, which would probably cost ME a lot of $$$$$http://www.dieselplace.com/forum/smileys/Cry.gif!!! I know GM won't pay for testing to prove the oil was at fault. They're just going to say that I used a non-approved oil and void my warranty!! I also know that Amsoil is not going to pay for testing to try to prove their product is at fault!!


To me, it's not worth what could be a BIG hassel!!!http://www.dieselplace.com/forum/smileys/Disapprove.gif

Fin Addict, everything you just stated was said so perfect.


Its probably pretty good oil in all respects, But its the setup of the company and lack of API certification that scares me, plus it just seems so generic. I have a hard time buying oil from a company that also sells dietary supplements, and vitamin supplements. I mean the pyramid schemes, Its Amway that sells oil.


I remember hearing somewhere that Spectra oils are pretty good for snowmobiles, but most would rather spend the 20 bucks for a gallon of Polaris 2-cycle and not risk any warranty BS.


Bill

I know for a fact (blown motor) that you cant mix synthetic oil (amsoil) and dino oil.

I have a blown motor to prove it. Even though they say you can.

I know for a fact (blown motor) that you cant mix synthetic oil (amsoil) and dino oil.

I have a blown motor to prove it. Even though they say you can.


I'd have to see more than a blown motor to believe mixing synth and dino caused it to blow. Not trying to start any urinary olympics here, but do you have any proof it was the oil? I have mixed the 2 in many engines over the years and never had a problem. The companies even tell you they are compatible. There must have been another cause.

Fin-Addict ---- NICELY SAID!! I wouldn't run Amsoil in my lawn mower, much less my $40k truck. Schaeffer's all the way baby..hey and it's API certified too! http://www.dieselplace.com/forum/smileys/Clap.gif

....one was an older Ford Ranger with over 200K miles, and the other were a chipper and a generator. Again they had some hours on them, but were running great, not burning a drop of oil until switched to Amsoil.


Dino oil builds up deposits on the seals. The deposits become the new seals and the seals dry out. In comes the synth and cleans away the deposits. Voila, the engine starts leaking. It's not because the synth is bad, it's just the opposite. If the oil has been changed religiously and a high quality dino oil has been used you probably won't have this problem. I have changed over to synth in several vehicles that had 100k+ miles on the engines without problems. Then again, one used rig I got had around 60k. I put in the synth and the leaks started almost immediately.

If you can't mix synthetic and dino oil then what's this blended 15w-40 that Penzoil puts out? I'm running it in my Dmax engine and so far no problems.





Jack

I didn't mean for this to be the Amsoil forum. I am wondering if anyone really knows the difference between M-1 Syn. ATF and Transynd if any real world difference at all.

BdG, I never meant for this thread to be an Amsoil forum either, my purpose in bringing up Amsoil to begin with was that they marketed both a synthetic atf and a replacement for Transynd. The fact that Mobil1 atf and Amsoil atf are both good quality synthetics and that Amsoil recommended that be used rather than use the new torque-drive fluid in our applications was, I felt, significant in that Amsoil sold both.


Then somebody came in with some little clever mispellings, etc.,and I felt compelled to defend myself. Sorry about that.


I still say Mobil1 should be more that adequate in our trucks, as it is a certified DexIII, and that is all our trucks require, and you must assume the synthetic is superior to dino.

It's not like I sell oil products and am in competition with Amsoil. So I have no agenda against them and I have better things to do than make up stories about an oil company that means nothing to me. The fact is friends of mine who switched over to Amsoil in their OIL INJECTED Arctic Cats ended up burning pistons shortly after. Could it have been a coincedence? Sure. Will I chance it? No. Should you? Be my guest. And don't insinsuate I made it up unless you're ready to go toe to toe.

D-O-M I hope you arent referring these "mispellings" etc towards me, That wasnt my purpose in my response(ie. piss someone off) If Mobil one meets DexIII standards then its naturally fine in our trannys.


I was just stating, that for 26-28 bucks dont risk asking the question, or worrying about it after you put M1 ATF, Just go straight to the source.(transyd)


Its like buying $3.50 oil filters for our trucks. Yeah they might work fine, But id rather spend 10 bucks on a AC Delco filter, and not have to worry about anything in case the Sh&amp;t Hits The Fan


Bill

"scamsoil" comment must of pissed someone offhttp://www.dieselplace.com/forum/smileys/Angry.gif


I don't use there products even though I think they are just fine.


Snowmobile engine seizures usually occur when jetted to lean for conditions. IE:A sudden ambient air temperature drop or running at a lower than normal elevation with the same jetting.This causes a lean mixture with a rise in combustion temps which cause the piston to expand and scuff the cylinder leading to a seizure.


On the other hand I always run the factory oil in all the sleds I've had and not seized a one.

I might be a little late with this post and it doesnt have anything to do with ATF but with the mixing of Dyno oil and sythetics. Being a rather large farm owner and operator you "hear" a lot about diesels. I know a custom harvester that swears by the blend. He runs 4 $250,000 rigs this way. His claim is that other custom harvesters that have run straight synthetic have ate up engines sooner than with dyno oil. Their claim is that the synthetics have some problem lubing the cylender walls compared to dyno oil. A blend extends their change intervals but keeps the natural lube needed.


That's thier claim. I'm no expert on this. I've just heard it tossed around. These machines are operating in EXTREMELY DIRTY conditions the majority of the time they're running too. Maybe that has something to do with it too? I probablly should not have posted this being I dont know first person, but I thought you guys might like to know. I'd think the people running that much $$ worth of machinery may know something we dont...


Jason