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CFD CFD is offline
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Join Date: Aug 2010
Location: Ireland
Posts: 114
Ok, so looking at your first post, there was about 5 months between each check of fluid level in the gearbox. How much did you put in when you topped up? This will give us an approximation of the "leak rate"....

When you say there is an engine oil leak, have you noticed this as a drop in level on the dipstick in the oil tank over time? Have you had to top up the engine oil?

If you clean it all from the engine/pipes etc, check/top up gearbox and go for a drive, is the engine coated with the oil right after as you describe or how quickly do the engine cases /pipes get covered?

If the leak is slow enough it's also possible it may be exiting the gearbox from the input shaft seal into the bell housing. If the rate is very slow over the 5 month or so time frame it might not show up any problems with the clutch/pressure plate and may have an exit where the bell housing bolts to the crank cases and is finding its way along the cases assisted with the airflow under the car. Although, intuitively, if the leak was this slow it should probably not end up as wet oil on the engine and pipes as you describe, especially when the engine is hot from a drive....
'76 911 Turbo
Old 06-18-2013, 01:54 PM
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