[W126 Coupe] Maintenance question

[Dean Slone]

The cap on my brake reservoir says to use DOT 4.   

Wikipedia http://en.wikipedia.org/wiki/DOT_4  seems to say that the only diff between 
DOT 3 205°C (401°F) 140°C (284°F)  and 
DOT 4 230°C (446°F) 155°C (311°F) are the boiling points.

I am not racing or driving in Death Valley in July so DOT 3 should be alright even though the cap says DOT 4.  Correct?

Dean
  ----- Original Message ----- 
  From: Dick Spellman 
  To: Mercedes Coupes Mailing Lists 
  Sent: Wednesday, July 22, 2009 9:46
  Subject: Re: [W126 Coupe] Maintenance question


  Camran,

  transmission kit components are:
  Pan Rubber Gasket
  Transmission Filter
  Torque Converter Plug seal (flat crush washer)
  Transmission Drain Plug seal (flat crush washer)

  Order it up from Jonathan.

  Brake Fluid is standard DOT 3 available anywhere.  If using a pressure bleeder pumped to 30 lbs as required to move fluid past the ABS pump, be sure and buy the two rubber brake reservoir caps from local MB dealer as these will be cracked if original and blow with the required pressure bleed.  Sequence is pass rear, driver rear, pass front, driver front.

  Do you have a pressure bleeder set-up or need a reference?

  I agree with preferred use of pre-mixed MB anti-sneeze fluid.

  Regards,
  Dick

  Camran Nassiri wrote: 
    I am getting ready to do a 30K maintenance routine on my 90 560SEC (70K miles total miles) and had a couple of questions.
    1- the transmission filter kit at my parts shop is $17.99 and the dealer says $85.  Is there a difference?
    2- Is dextron III the right fluid for the tranie?
    3- Should I bother changing the differential fluid also?
    4- I am flushing the brake lines and changing the coolant.  I am getting those fluids from the dealer.
    Thanks,
    Camran 90 560SEC, 91 420SEL 80 240D





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