356c transmission oil

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bweare
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356c transmission oil

#1 Post by bweare »

Haven't changed my 356C transmission oil since the Nixon Administration. What's recommended these days. Somebody used to suggest adding a little STP? Probably Andy Granatelli. Thanks, Bud

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Mike Wilson
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Re: 356c transmission oil

#2 Post by Mike Wilson »

Coincidentally I just looked this up for a friend of mine. Per the lubrication schedule in the drivers manual, transaxle oil was to be replaced at 1500 miles after the break in period. However, I suspect that with the new oils like Swepco, the interval is longer.

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Mike Wilson
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'63 B coupe

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Doug McDonnell
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Re: 356c transmission oil

#3 Post by Doug McDonnell »

In this link Vic Skirmants says any good name brand 80/90 weight oil. viewtopic.php?f=1&t=40632&hilit=transmission+oil+oil I use Swepco but some complain of more leaks using it.
1965 356C 2000 BMW 740i Sport 1967 Honda CL77 There is never enough time to do it right, but always enough time to do it over.

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Mike Wilson
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Re: 356c transmission oil

#4 Post by Mike Wilson »

The Swepco does seem to be thinner in viscosity.

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Mike Wilson
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Mike Wilson
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Re: 356c transmission oil

#5 Post by Mike Wilson »

I stand corrected by someone with definitely more experience and knowledge than I possess, Dick Weiss.

After break-in, the transaxle oil should be checked at 3000 miles and changed at 12,000. If your driving conditions are more severe, as with engine oil, it should be changed more frequently.

Thanks, Dick. Much appreciated.

Mike
Mike Wilson
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'63 B coupe

George Dunn
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Re: 356c transmission oil

#6 Post by George Dunn »

Vic and Dick are truly two of our best authorities--go with their advice.
I switched the tranny oil in my 356C to Swepco about 15 years ago and immediately noticed slightly smoother shifting.Very happy with it, but some have stated that Swepco may be more leak prone than regular 80/90 wt gear oil.
Good Luck, George Dunn

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Jim Alton
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Re: 356c transmission oil

#7 Post by Jim Alton »

George Dunn wrote:Vic and Dick are truly two of our best authorities--go with their advice.
I switched the tranny oil in my 356C to Swepco about 15 years ago and immediately noticed slightly smoother shifting.Very happy with it, but some have stated that Swepco may be more leak prone than regular 80/90 wt gear oil.
Good Luck, George Dunn
I too thought my shifting was a bit better with Swepco.
 
Jim Alton
Los Angeles County, CA
1958 Porsche 356A Cabriolet
1965 Porsche 911 Coupé
1966 Volkswagen Type 2
2003 Porsche 986 Boxster

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