Freshly rebuilt Porsche 911 3.2 leaking oil? Caveat?

[Carreraman]

olly22n said:

Carreraman said:

Bit late for that now lol, THAT being said - its only done like a few thousand miles after the rebuild.
Perhaps just let it warm up properly and give it some long summer drives with the occasional caning for a few thousand miles more?

It will be run in by now, esp if just a top end. Drop the oil if it has not been done already since the rebuild and then drive it as normal. These engines thrive on use and revs once warm.

It was completely rebuilt! U recommend another oil bleed and change then?

[Russwhitehouse]

Older engines tend to like non fully synthetic oil with a higher zinc content. a decent mineral based 20/50. Although fully synthetic is great for modern engines due to its better "slippiness" and anti friction qualities, it will seek out and find places to leak in older motors and doesn't always agree with older type seals and gaskets.

[Carreraman]

So would it be best to just stick with the oil used since the rebuild, or completely change it?

[Carreraman]

olly22n said:

Carreraman said:

It was completely rebuilt! U recommend another oil bleed and change then?

Not another, I said if it hasn't had an oil change since the rebuild, then do one. If it has then just enjoy the car.

Alright mate, thanks for the advice! Stick with the same oil type?

[TooMany2cvs]

POORCARDEALER said:

I used semi synth in my old never rebuilt 3.2, it dripped very slightly, when I put Mobil 1 full synth it leaked like a sieve

Were they the same viscosity?

[OlberJ]

Nice purchase indeed.

My 964 sweats the odd drip too, dependent on what oil it is currently bathing in.

Seems like quite a deep dish on those rear wheels or maybe just the Burgundy paint. Sits nicely though! Enjoy.

[Huntsman]

catman said:

If the rebuild included a rebore/pistons, I've read that full synthetic oil is a bad idea, as it prolongs the bedding-in process.

Using a cheaper oil to start was recommended, then full synthetic oil when the engine was run in.

Tim

3.2 Carrera engine is aluminium cylinders with nikasil bore, hence no rebore, either re-use or bin or bore out and replate.

[strath44]

hey mate nice looking car with the Fuchs.

I would say that as helpful as people are being you need a bit more vehicle specific help as all car respond much better to exactly the right oils relevant to the car and climatic conditions.

I would try either:

http://forums.pelicanparts.com/porsche-911-technic...

or

http://www.impactbumpers.com/forum/index.php

or here:

http://www.bobistheoilguy.com/forums/ubbthreads.ph...

I don't like directing people away from here but with the greatest of respect you need better advice from people that are running these cars hard daily etc etc. Also there is a lot of chat to do with zddp levels and Porsche engine.

Remember the tolerances Porsche was working to when they built this car have changed a lot since 1980. So modern oil are less forgiving when it comes to seal conditioning and leaks and these older cars.

It was the 964 that was particularly notorious for oil leaks as Porsche pretty much though they were so accurate the requirement of gaskets and seals were not required in certain applications. Have a look at this:

http://www.instant-g.com/Products/36Conversion/Hea...

[catman]

Huntsman said:

3.2 Carrera engine is aluminium cylinders with nikasil bore, hence no rebore, either re-use or bin or bore out and replate.

Thanks. I guess it would still require some running in though, so my initial post would still be accurate. Full synth would prolong any bedding in process.

Tim

[vtgts300kw]

F'ing' stunning. Congrats.