Dextron III
Hi all,
what is the difference betwen Dextron II and III? I am using III, is that might cause a problem?
Cheers Angelos
Hi all,
what is the difference betwen Dextron II and III? I am using III, is that might cause a problem?
Cheers Angelos
No. Dexron III exceeds Dexron II specifications. As long as you don't experience leaks you are good!
heard dexron 111 was a no no-no use in mitsubishi's, not sure why but id stick to 11
Peter I am sorry but I can't get your point due to my English perhaps, could yoy please make it easier? :oops:
Thanks Angelos
Yes Dexron III exceeds Dexron II specifications, BUT not all Dexron III is the same, some makes of ATF Dexron III can be used in Dexron II applications but MOST others cannot.
If you use the power of logic IF Dexron III can totally replace Dexron/Dexron II then why is Dexron/Dexron II still being sold if there is no use for it IF Dexron III can replace it?
You should refer the ATF makers website ware you should be able to get spec’s as to the standards that the ATF oil meats besides “Dexron III†like all the other vehicle manufactures spec’s relating to gear oil’s
You have the same problem with Unimog’s but with SAE80 gear oil as they have to be to STRICT GL4 specification, I.e. you cannot use EP80 (GL5 gear oil or GL4/GL5 - transaxle oil) or EP80 Hypoid (GL5 or GL4/GL5 - transaxle oil with hypoid diff) this is due to the fact that the oils that are GL5 or GL4/GL5 contain additives that will eat away white & yellow metal bearings and synchromesh’s etc unlike STRICT GL4 state gear oil.
I take the opportunity of Angelos' post to ask a general knowledge question: Would you use Dexron III ATF in the 722.6?
I am using A.001.989.21.03.10.
:oops:
Yes Dexron III exceeds Dexron II specifications, BUT not all Dexron III is the same, some makes of ATF Dexron III can be used in Dexron II applications but MOST others cannot.
If you use the power of logic IF Dexron III can totally replace Dexron/Dexron II then why is Dexron/Dexron II still being sold if there is no use for it IF Dexron III can replace it?
You should refer the ATF makers website ware you should be able to get spec’s as to the standards that the ATF oil meats besides “Dexron III†like all the other vehicle manufactures spec’s relating to gear oil’s
You have the same problem with Unimog’s but with SAE80 gear oil as they have to be to STRICT GL4 specification, I.e. you cannot use EP80 (GL5 gear oil or GL4/GL5 - transaxle oil) or EP80 Hypoid (GL5 or GL4/GL5 - transaxle oil with hypoid diff) this is due to the fact that the oils that are GL5 or GL4/GL5 contain additives that will eat away white & yellow metal bearings and synchromesh’s etc unlike STRICT GL4 state gear oil.
Hi Unimog,
you were clear as crystal and I am convinced that I have to stick on cars specification.
Thanks Angelos
I take the opportunity of Angelos' post to ask a general knowledge question: Would you use Dexron III ATF in the 722.6?
I am using A.001.989.21.03.10.
:oops:
There is a new MB ATF (P/N: A.001.989.45.03.10) that is designed for use in the newer 7-speed auto transmissions. This is supposed to be superior to and is recommended for use in place of the P/N listed above.
But never use any other....
Fuchs manufactures many of the OEM lubricants, particularly for MB transmissions. Here's where you can get a full set of details for any car:
http://olyslager-lubricants.nl/fuchstest/FUCHS/select.asp?language=1
The 3353 ATF is that developed for the latest MB, 7-speed auto-transmissions and is downwards compatible with the rest, 5 and 4 speeders.
Available here (no affiliation):
http://www.opieoils.co.uk/c-395-fuchs-gear-oil-final-drive-oil-atfs-mtf....
With regards to the GL-4/GL-5 issues, it seems that many of the newer synthetic based oils achieve GL-5 specs without resorting to corrosive additive packs (Chorine or Suphur based additives, which traditionally were used to help achieve the extreme pressure properties, but which attack certain alloys).
I think one such oil is Castrol Syntrax and a good, fully synthetic, oil for the transfer case Castrol SMX-S, which is GL-4.
I replaced all the fluids with syntrax on my manual 463 because when cold it was so sluggish. I investigaged the castrol website and syntrax is fully compatable and fully exceeds all mb quoted specs. quite an improvement in driving and well worth the effort.
I replaced all the fluids with syntrax on my manual 463 because when cold it was so sluggish. I investigaged the castrol website and syntrax is fully compatable and fully exceeds all mb quoted specs. quite an improvement in driving and well worth the effort.
Good to hear! I'm also running Castrol Syntrax in the diffs and SMX-s in the transfer case.
I also did some further research which indicated that the problem with some GL5 oils and "yellow-metals" was only relevant at temperatures over 220F, which are unlikely to be seen in any differential.
In any case according to the MB lubrication sheets (MB 235.0: Cross Country Vehicles: Axles) the diffs of the G-wagen are compatible with GL5 oils, such as Castrol EPX 80w/90, which contain phosphorous and sulphur additives.
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