Mercedes 300CD Transmission Fluid Parts

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Mercedes 300CD
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Accessories and Fluids
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ATF, Automatic Transmission Fluid
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For Mercedes models with automatic transmission up through 722.4XX type mechanical transmission specifying Dexron III fluid. NOT for use in any later model electronic transmissions (722.5xx, 722.6xx, 722.7xx).
1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985 Mercedes 300CD, 300CDT
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$21.29
Reg
$22.18
List
$27.00

Mercedes 300CD transmission fluid typically cost between $21.29 and $21.29.

Transmission Fluid Capacity and Specification For Mercedes 300CD

  • 1978-1981 Mercedes 300CD (3.0L Diesel, OM617.912 engine)
    • Transmission Fluid Capacity (complete change including torque converter): 7.9 quarts
    • Specification: MB 236.14 or Dexron III/Mercon ATF
  • 1982-1985 Mercedes 300CD Turbodiesel (3.0L Turbo Diesel, OM617.952 engine)
    • Transmission Fluid Capacity (complete change including torque converter): 7.9 quarts
    • Specification: MB 236.14 or Dexron III/Mercon ATF

What Type Of Transmission Fluid Should I Use For My Mercedes 300CD?

If you want your Mercedes 300CD transmission fluid to do its job, stick with what the engineers intended. Most 300CD owners go with Dexron III or any transmission fluid that matches those requirements. The wrong type won't just cost you smooth shifts—it can shorten the life of your transmission. Cheap, universal blends often create issues, so you’re better off sticking with something you trust or that the brand recommends. Flip through the owner's manual if there's any doubt. The right pick means you won’t have to think twice every time you drive.

How Often Should I Change My Mercedes 300CD Transmission Fluid?

Plenty of folks want to know when their Mercedes 300CD transmission fluid needs a refresh. You’ll hear different advice, but around every 30,000 to 40,000 miles is a safe call. Some people swap fluid earlier if traffic or heavy use plays a role. If the fluid looks dark or smells off, you don’t need a calendar—just change it. Mercedes did not set a strict schedule in the early years, so most careful owners take matters into their own hands and change it a little sooner, just to avoid headaches down the line.

How Many Quarts Does The Mercedes 300CD Transmission Require?

When you’re handling your own Mercedes 300CD transmission fluid change, you’ll want to know how much to have ready. For most quick changes, you’ll pour in about 4 quarts. If you’re draining the torque converter and doing a full flush, count on closer to 7 or even 8 quarts. Always check the dipstick with the car warmed up and running—levels must be just right. Don’t skimp on keeping an extra bottle around, since it’s always better to have a little more than you need, rather than make a last-minute parts run halfway through the job.

How Do I Check The Transmission Fluid Level In My Mercedes 300CD?

Checking Mercedes 300CD transmission fluid isn’t complicated, but a few steps will keep you on track. Warm up the car, park it level, and leave the engine running in Park. Grab a cloth and pull the transmission dipstick. Wipe it, stick it back in, then check where the fluid sits on the markings. If it falls below the safe zone, top it off in small amounts. Each check is another chance to glance at the fluid’s color and smell, both of which can tip you off about its health.

What Are The Signs Of Low Or Bad Transmission Fluid In A Mercedes 300CD?

Knowing when to check your Mercedes 300CD transmission fluid can prevent bigger repairs. Trouble shifting, a rough ride, or hearing odd sounds—these can all point to poor or low fluid. Sometimes it shows up as a red puddle under your car, or the fluid itself looks dark and smells burned. Waiting to fix these signs often leads to costly fixes, so taking care of small issues early pays off. Simple checks at home keep your transmission running strong without surprise breakdowns.

Why Buy Mercedes 300CD Transmission Fluid From AutohausAZ?

Getting Mercedes 300CD transmission fluid from AutohausAZ saves time and headaches. Prices land lower than most, delivery moves quickly, and you’re not left guessing if you’ve bought the right thing. The return process doesn’t drag on or get complicated either—if you need to send something back, you can. Whether you’ve got a big job lined up for the weekend or just fixing a small leak, you’ll get your parts fast and affordable. Keeping your Mercedes in top shape doesn’t have to cost a fortune or steal your free time. With us, it won’t.