"Mayonaisse" in Carb Damper

Technical advice Q&A
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Redman
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Joined: Tue Jan 24, 2023 1:15 pm
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Great Britain

#1 "Mayonaisse" in Carb Damper

Post by Redman » Sun Jul 07, 2024 10:00 am

I was checking the oil dampers on my S3 Strombergs - removing all previous oil and replacing. However on the front/right carb I found that the oil I was removing had turned into a thin "mayonaisse". The only experience I have with this sort of thing is in air cooled cars if water vapour mixes at the top of the oil filler tube (for example if not getting the engine hot enough regularly to burn off any water vapour).

Is this the result of water vapour? How come in the carb damper? I also noted that the metal rod of the damper itself has surface corrosion so looks like this has been happening for some time.

I do drive the car regularly, and always for minimum of an hour to really get it up to temperature, including about 30 mins fast motorway driving.

Ideas? Solutions?

Gordon

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Gordon James
S3 1971 - Original (JHT) LHD/Auto/Air Con. Re-imported from US via UK in 1994, rebuilt Antwerp. Dk Blue (orig Sable)/Biscuit (orig Beige)
Porsche 911SC 1983
VW T2A Bus 1971
VW Beetle Cabrio 1967 (but bit of a mixture!)

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caveman
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#2 Re: "Mayonaisse" in Carb Damper

Post by caveman » Sun Jul 07, 2024 4:22 pm

Gordon,
You have done the right thing by changing the oil as it does indicate water/moisture contamination. I would clean everything and monitor if the milky residue returns as this would indicate water/moisture ingress somewhere.
Steve
1965 S1 4.2 FHC (early)
:wavegreatbritain:

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