Author Topic: what gear oil to use to bring the whine down a little 80-90 or 75-140?  (Read 4964 times)

erickmarciano

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just adjusted the rotation force on the rear diff from 12 lbs to 16lbs and the diff now makes less noise . would the type of gear oil affect the noise? is so what to use to minimize the noise?
thanks
1994 E500 W124
1971 280sl
1989 Porsche 930 coupe
1988 e30 m3
2001 ducati mh900
2006 ps1000
1962 Vespa GS160

awolff280sl

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Before I tightened my diff drag, I had a definite whine betwen 45-60mph. After tightening it is barely perceptable and I can only hear it between 55-60mph with acceleration. I'm using Redline synthetic 75-90, don't know if it makes a difference.
Andy   Sarasota, FL
'69 280SL 4speed
'06 Mitsubishi Evo

erickmarciano

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thanks for all your past help ,the job was very easy with the right tools.my noise is only barely noticible at the same speed as you. hope I did not tighten it to much .
to all the others do you think synthetic would lower the noise even more?

thanks
1994 E500 W124
1971 280sl
1989 Porsche 930 coupe
1988 e30 m3
2001 ducati mh900
2006 ps1000
1962 Vespa GS160

jameshoward

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Erik,

Can you define 'really easy' and 'the right tools'? I am about to attempt with another the replacement of my rear axle and will want to give it the once over beforehand.

Is the process one that is easily described?

James
James Howard
1966 LHD 230SL

Garry

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James,

Did I read that right, you are about to take out the 3.46 axle and replace it with another??
Garry
Garry Marks
Melbourne/ Kyneton, Brisbane. Australia
1969 MB 280SL 5 speed RHD SOLD.
1965 MB 230SL Auto RHD Lt Blue 334G, Top 350H, Tourist Delivery.
1972 MB 280CE Auto RHD 906G
2005 MB A200
2006 MB B200
2019 Izuzu DMax 4x4 Slide-on camper.
2022 Volvo XC40 Electric
2024 Volvo EX30 Electric

erickmarciano

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1994 E500 W124
1971 280sl
1989 Porsche 930 coupe
1988 e30 m3
2001 ducati mh900
2006 ps1000
1962 Vespa GS160