tranny fluid

[chris426]

what is the dang difference?? they have mercon, atf, atf 2, atf+3, dexron, mercon-dexron, dexron-mercon? mercon v (which is the new sythetic universal stuff) does i hurt to put mercon dexron in a mopar? here a while back i put some in my 727 and it didn't tear up.

[derbyman753]

i really cant answer that chris426 but if i were u i would use hydrolic fluid i think they would be way better with it in them , i know thats all we run in our 350 turbos and have transmissions that has been in a 76 wagon and vics and is still perfect and there not near as stout as the 400 as everyone knows or 375 thats what i would try just my opinion though the reason being is hydrolic oil wont break down its used in trackhoes an such u know how much pressure and heat is on them digging
6 and 7 fet in the earth through rocks and such thats why along time ago we tried it prob. 7 years ago and u can mix it to we do all the time and have never had one go out hope this helps 753

[chryslerfat]

The reason for dexron and mercon is that hydraulic fluid foams and these have anti foaming agents to keep from burning the tranny up. This started way back in the 60s with the aluminum powerglide. Just ask an oldtimer or a GM dealer they can explain it best. I myself would not run hydraulic oil in my GM trannies unless it had anti foam properties.

[chris426]

well as of right now, my cars are gonna have a good ole mopar power plant, because i'm running mopar cars for now, until i get around to my gms, and i just don't feel like having the headaches of trying to put a sbc in the place of the bbmopar.
i was mostly wondering what the heck is the deal with all of it? it seems like it would all work, because some forumlas like the hurst racing brand atf can be used in any automatic tranny, and the new synthetic mercon v is universal.
i wonder what i should use for the ole 727, maybe hydralic fluid, don't they have the kind now that don't foam up, because they can also be used in heavy equipment transmissions?? if not hydralic fluid, i'll probably go with the synthetic, i know sythetic oils cause less lag on the engine, and don't burn as easy, or get as hot as regular oil the synthetic oil supposedly runs cooler and all. and i was thinking the synthetic tranny fluid would have basically some of the same properties as the sythetic oil, but you do know that synthetic oils aren't made from crude oil, they are made from chemicals.

[stris141]

All I can tell you, is what a tranny builder told us. In the older trannys (727, C-4, 350/400, etc), he used Ford tranny fluid. It met all the other car specs, and took the heat better. And that's what we've run, and not had a problem. Except when we can't run a tranny cooler. Then we use tractor fluid.

Steve

[chryslerfat]

I myself being certified in ASE would not recommend hydraulic fluid it is not recommended for heat and does not have anti-foam caracteristics.

[Slam_Shifter]

Better recheck your ASE specs then. The hydraulic oil that is used in equipment applications is non foaming and is a thicker viscosity for the heat. The other style hydraulic oils are made for things like jacks and other low circulation and heat properties. That is why they use it and not ATF in backhoes and tractors. I have seen what happens when the wrong hydraulic oil gets put in a back hoe. It will run about 45 minutes and then it gets all sort of stupid because of the air in the fluid.

[chryslerfat]

It is not an ASE spec. it is a certification given from a test to see if you know how to diagnos and repair. There are different types of hydraulic fluid out there my statement is you need a lower viscosity and anti-foam capabilitys which your statement agrees with.

[derbyman753]

exactly slam i use heavy equipment fluid 753 ;D
also thanks chrytlerfat and slam 4 clearing the differences up thanks this is what i like about this sight, everyone can learn a little more from each other , 753 ;D