Quote:
Originally Posted by rickjordan
The owner's manual for my '80 SD says to use ATF. Of course things change. I would use what is recommended in the manual. Though sometimes I wonder if manufactures recommendations to use their brand fluids, is just them repackaging off the shelf products but at a premium.
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there is a way to figure this out.
Look in the owner's manual to see what fluids are recommended. If they say ATF, see what ATF they mention, even for power steering.
Next, go to the manufacturer's website and look at the data sheet for the ORIGINAL product, which should still be there.
Match the viscosity, wear and seal compatibility numbers on the original stuff with your newer replacement in that brand.
If you are looking for Dexron III go get the non-synthetic (available with a little looking) and you will find what you need.
I have never had a power steering issue on any MB, but I do change the fluid and filter every 100,000 miles and flush out the system with more fluid and check the belts.
You will notice a real difference in how fast the steering responds. I have, both in a 123 and a 126.