soontobeLS1

Looks as though this is recommended by everybody. Looked on the store shelf the other day, they only had the "mobil 1 synthetic ATF" is this the one, or is there a Mobil 1 Regular ATF???

Thanks for any clarification. I know people are saying stay away from synthetics in the T-56's.

MeentSS02

iTrader: (11)

Mobil 1 only makes synthetic ATF that I know of, and is what I have used in the past with no problems...my stock 2002 T-56 ran it with no problems, and my current rebuilt T-56 from Six Speeds Inc. uses it with no issue either. I currently run Torco ATF, and I like it a little better (if only for exclusivity).

ls1 joe

iTrader: (37)

I would suggest either Mobil 1 ATF or Synchromesh. There is also Redline which is what we have in our race car right now and seems to be working WONDERFULLY.

Amber

soontobeLS1

Thx for the replies, just for clarification though, either 1) GM Synchromesh (which is factory fill) or Mobil1 Synthetic ATF??? I went on the Mobil 1 website and they have a few diff blends. I am just worried about the "anti synthetic threads". I may just do the GM refill from the dealership.

R

MeentSS02

iTrader: (11)

In all honesty, get whatever you are comforatble buying and putting in your car. If you buy into the stigma surrounding synthetic fluids in a T-56, that's fine...but if you are basing that off of things you've read on the internet, you may be buying into poor reasoning, since the internet is full of complete **** and idiots, and the ratio of **** to good information seems to be favoring the **** side more and more as time goes on.

Out of the choices you've listed, I don't think you'll go wrong either way. I've heard a few bad things from people about both synchromesh and Mobil 1 ATF from this board as well, so it seems like everyone has had issues with damn near everything out there...whether or not those issues were real or imagined is another ball game where I don't want to throw the first pitch - it just isn't worth the hassle.

MeentSS02

iTrader: (11)

And for a straightforward answer:

Listen to the advice from Amber at Six Speeds Inc. Their livelihood depends on their business, and their business is rebuilding these transmissions. The only ATF that I've ever heard them talk badly about is Royal Purple...other than that, you should be fine.

ls1 joe

iTrader: (37)

I agree 100%.

Amber

thesource

iTrader: (60)

I've used Royal Purple syncromax fluid in several units from T56's to T5's to NV4500's and they all seem to hold up just fine . If I were going to choose between non synthetic and synthetic ATF , I would prefer the non synthetic version . Syncro rings work off of friction thus sometimes called friction rings as well . Most of the time the synthetic ATF works well to cut down heat but tends to lack the needed friction properties of its non synthetic version . If this happens the syncro rings cannot work properly . I've seen this alot in later model differentials with synthetic gear lube and factory traction lock devices .

Transamman25

iTrader: (1)

Ive put as much as 550 hp through my T56 and when i check fluid (Mobil 1 ATF)-- I have zero complaints running it going on 12,000 miles strong

Although now that ive made this post .. ill be calling you soon amber !

CranMaro99

iTrader: (10)

I just bought some Dex-III Chevron ATF as a replacement (but have yet to use it).

Is this stuff still decent? It is my DD. I don't hardly race my engine (but of course we all do eventually). I also thought Dex-III was the OEM stuff not the GM Syncromech... Am I wrong?

MeentSS02

iTrader: (11)

Dexron III is just a standard that ensures the fluid has enough whatever in it to do the job in your transmission properly. As far as I know, yes, these cars came with regular Dex III from the factory, not synchromesh.

As long as the fluid meets the Dex III specs, you should be fine.

CranMaro99

iTrader: (10)

Thanks again MeentSS02

bad6as

iTrader: (17)

six speed inc. (was t-56 rebuilds when i got mine done) said mobil 1 atf so thats what im using.

prior rebuild i went threw 4 differant types of fluid, dont waste your time or $ and use mobil 1

soontobeLS1

Look I appreciate the responses...but the question really didnt get answered...

The store I went to only has 1 kind of "Mobil 1 ATF". The bottle reads...."MOBIL 1 ATF SYNTHETIC BLEND". Is this the stuff....or is there another regular old Mobil 1 ATF "NON SYNTHETIC".

Perhaps this store just doesn't carry the regular stuff...then I can look elsewhere.

Thx.

MeentSS02

iTrader: (11)

The Mobil 1 Synthetic ATF is the only kind I've ever seen in stores, and is what I have used when I have used it. As long as it meets the Dexron III specs (will say it on the bottle), you'll be fine.

BriancWS6

iTrader: (18)

If it says Mobil "1", then it's synthetic, if it just says "Mobil", then it's conventional or a blend.

I recommend Pennzoil Synchromesh. I have been running it for a couple years with great results.

moehorsepower

iTrader: (3)

EEEKK, RP is what I have in my Tranny, time to change and put some other brand, Has anyone ever used the ole Trick Shift by B&M?? I believe it is synthetic also....

dailydriver

^^^^ What he said.

And just to head off any confusion, soontobeLS1; the Pennzoil Synchromesh is the same exact stuff that's in the GM Synchromesh bottle, only with a lower price tag. I've also used this, and it was great when warm (even better than the Mobil 1), but it was a little 'notchy', and caused the slightest little bit of synchro grind on very cold winter mornings. So I switched back to the Mobil 1.

BriancWS6

iTrader: (18)

I have driven my car in 20 deg weather with no issues with the tranny shifting while using Synchromesh.

speed_demon24

iTrader: (6)

When I went from ATF to syncromesh my car shifted ALOT smoother and when my dad went from mobil 1 ATF to syncromesh in his car it fixed the 2-3 shift grinding and his car also shifts alot smoother. That's the only oil I run in my tranny from now on.