'life time' transmission fluid - PeachParts Mercedes-Benz Forum

janko · #1 05-19-2006, 01:34 PM

preparing to drain tranny fluid in friend's newer mb. the stuff where you do not have to do this. yea, i know. the question - any benefit to using this fluid in say my 86 300sdl? with proper, whatever that is, drain intervals. cost at local dealer today was around $12 the quart.

TheDon · #2 05-19-2006, 01:37 PM

lifetime as in never needs changing?

Rich300TDMBZ · #3 05-19-2006, 02:32 PM

I would not reuse fluid from another car that needs to have it changed. Newer cars changed the fluid to get rid of metal filings, etc from moving parts in the system, and I definitely do not want those things in my transmission.

dieseldiehard · #4 05-19-2006, 02:33 PM

Don't use the new formula stuff in an older transmission. I don't support the lifetime BS that they are pushing anyway.
If you want the best buy Mobil 1 synthetic AT fluid. O/W use the latest Dexron (III?) fluid in the SDL, about 6 qts if you drain the torqueconverter.

boneheaddoctor · #5 05-19-2006, 02:33 PM

don't do it....only use fresh fluid that meets the requirements you your year, make and model.

techguy512 · #6 05-19-2006, 02:58 PM

Quote:

Originally Posted by boneheaddoctor

don't do it....only use fresh fluid

I don't think he's talking about reusing old fluid. I think he's proposing using newly purchased quarts of the new-fangled fluid in an old-fangled transmission.

I agree with the others. Better off using the fluids that were intended -- Dexron II/III or Mobil-1 Synth if you're feeling spendy.

Bob
'82 300D

janko · #7 05-19-2006, 03:33 PM

sorry. did not mean to imply i would use the drained fluid. and for a funny. isn't anything i drain supposed to go into the fuel tank!

boneheaddoctor · #8 05-19-2006, 03:58 PM

Quote:

Originally Posted by techguy512

I don't think he's talking about reusing old fluid. I think he's proposing using newly purchased quarts of the new-fangled fluid in an old-fangled transmission.

I agree with the others. Better off using the fluids that were intended -- Dexron II/III or Mobil-1 Synth if you're feeling spendy.

Bob
'82 300D

OK, if thats the case he should stick with what is intended for the car. Be it the regular or the synthhetic version of the product. SOme of the stuff used in newer modles is unsuitible for the older ones for a number of reasons.

Hatterasguy · #9 05-19-2006, 04:45 PM

MB got rid of the filled for life service spec recently. Now you need to change it either at 40k or 60k miles. The dash computer should tell you. Its like service A,B,C ect.

The the older 722.6's should have the fluid done every 60k-80k miles.

Using MB trans fluid in our older cars would be a waste of money.

t walgamuth · #10 05-20-2006, 02:42 PM

Quote:

Originally Posted by janko

sorry. did not mean to imply i would use the drained fluid. and for a funny. isn't anything i drain supposed to go into the fuel tank!

yeah, but not without very good filtering!

tom w

dieseldiehard · #11 05-20-2006, 07:55 PM

FYI:
San Francisco area seller has 8 qts of MB "lifetime" trans fluid $55
w/ filter and gasket $80 I dunno if thats a good deal, they bought it at a dealer.

http://www.craigslist.org/sfc/pts/162587119.html

aklim · #12 05-20-2006, 07:59 PM

Why is anyone looking for lifetime fluid anyways? The stuff my 722.6 has is a lifetime fluid. There is no dipstick and it is a sealed unit. MB even says it is a lifetime fill but they don't say whose lifetime. Dropped mine anyways at 60K to have a clean filter and fresh fluid in it. Also tells me how the tranny is doing when I look at the pan.