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decgraham
Suzuka


Joined: 17 Sep 2008
Posts: 1101
Location: Spain


PostPosted: Mon Nov 13, 2017 12:21 pm    Post subject: Still have an oil drip! Reply with quote

Well, after all my hard work I still have an oil drip Mad Started the car up whilst on the axle stands, lay underneath it and watched and waited. I noticed a drip appearing as shown in the first and second pictures, it then slowly trickled down the crankcase, third picture. However, I wiped it a way a couple of times and by the time the car was up to temperature there was nothing coming out. So can the experts out there please tell me what I need to do? The RHS is absolutely bone dry as are all the areas where I have replaced the various gaskets.

Must say that I'm a little disappointed, but as they say here que sera sera.

ATB Smile
_________________
1995 993 C2 Cab TipS in Guards Red
 



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Cameltoe & Heel
Suzuka


Joined: 26 Jan 2009
Posts: 1017
Location: Preston - Lancs


PostPosted: Mon Nov 13, 2017 12:25 pm    Post subject: Reply with quote

Hi mate, is your car varioram or not?, if it is please check that the lower varioram actuator isn't leaking as that was the source of a leak on my motor.

Trev
 
  
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decgraham
Suzuka


Joined: 17 Sep 2008
Posts: 1101
Location: Spain


PostPosted: Mon Nov 13, 2017 12:32 pm    Post subject: Reply with quote

Hi Trev,

No unfortunately mine is non varioram. I have a feeling, having looked at the PET it might be the O ring at the bottom of the middle cylinder No2 on the LHS Sad

However, I am not taking the blo*dy engine out.

ATB Smile
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cableguy
Barcelona


Joined: 10 Sep 2007
Posts: 1297
Location: North Yorkshire


PostPosted: Mon Nov 13, 2017 1:24 pm    Post subject: Reply with quote

decgraham wrote:
Hi Trev,

No fortunately mine is non varioram. I have a feeling, having looked at the PET it might be the O ring at the bottom of the middle cylinder No2 on the LHS Sad

However, I am not taking the blo*dy engine out.

ATB Smile


Let me edit that for you. Wink

C.
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Pork!
 
  
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decgraham
Suzuka


Joined: 17 Sep 2008
Posts: 1101
Location: Spain


PostPosted: Mon Nov 13, 2017 1:30 pm    Post subject: Reply with quote

Hi cableguy, yes I agree completely Laughing but I was just thinking if it could be the source of my leak I'd live with varioram Thumb

ATB Smile
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ras62
Montreal


Joined: 20 Jan 2012
Posts: 580
Location: Cheshire


PostPosted: Mon Nov 13, 2017 1:57 pm    Post subject: Reply with quote

Highly likely the bottom base gaskets on one or more barrel unless its coming fro the top of the engine. Time to maybe go to slightly thicker oil 10w50 or just live with it. Only way to fix is a top end rebuild.
 
  
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Will Statt
Nürburgring


Joined: 28 Aug 2003
Posts: 458
Location: Derbyshire


PostPosted: Tue Nov 14, 2017 9:00 am    Post subject: Reply with quote

Sure it's not coming from the return tubes? That's where mine came from, even though, (like yours) it doesn't appear to be coming from there.
 
  
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decgraham
Suzuka


Joined: 17 Sep 2008
Posts: 1101
Location: Spain


PostPosted: Tue Nov 14, 2017 10:35 am    Post subject: Reply with quote

Hi Will,

When you say return tubes do you mean the oil tubes, part no 36 in the PET, page 11? (see attached) If so I gave both a very good clean with de-greaser and watched them like a hawk after running the engine up and could see nothing coming from the area. I'll have another look just to double check so thanks for the advice.

I did at first think / hope it was coming from the return pipe so took off the coupling and fitted a new aluminium sealing ring and tightened up the coupling nice and tight. You can see that I put a small dent in one of the tubes Embarassed but it wasn't coming from there.

ATB Smile
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1995 993 C2 Cab TipS in Guards Red
 



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Cameltoe & Heel
Suzuka


Joined: 26 Jan 2009
Posts: 1017
Location: Preston - Lancs


PostPosted: Tue Nov 14, 2017 10:51 am    Post subject: Reply with quote

I believe you can now get collapsable oil return tubes so they can be installed with the engine in situ.

Trev
 
  
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decgraham
Suzuka


Joined: 17 Sep 2008
Posts: 1101
Location: Spain


PostPosted: Tue Nov 14, 2017 10:57 am    Post subject: Reply with quote

Hi Trev,

Yes you can, they are about £23.00 each from Euro car parts, OEM quality, original Porsche a lot more Mad

ATB Smile
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Will Statt
Nürburgring


Joined: 28 Aug 2003
Posts: 458
Location: Derbyshire


PostPosted: Tue Nov 14, 2017 11:19 am    Post subject: Reply with quote

decgraham wrote:
Hi Will,

When you say return tubes do you mean the oil tubes, part no 36 in the PET, page 11? (see attached) If so I gave both a very good clean with de-greaser and watched them like a hawk after running the engine up and could see nothing coming from the area. I'll have another look just to double check so thanks for the advice.

I did at first think / hope it was coming from the return pipe so took off the coupling and fitted a new aluminium sealing ring and tightened up the coupling nice and tight. You can see that I put a small dent in one of the tubes Embarassed but it wasn't coming from there.

ATB Smile


Yes, they're the ones I mean. Mine would appear not to leak, but there would be a drip like yours after a run. I had mine changed for the collapsible ones and it cured the leak. Lucky for me, as a cheap cure rather than heads off!! Hope yours may be the same!
 
  
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decgraham
Suzuka


Joined: 17 Sep 2008
Posts: 1101
Location: Spain


PostPosted: Tue Nov 14, 2017 1:40 pm    Post subject: Reply with quote

Hi Will,

Next time I take the car out for a run, when I get back I'll get her up on the old axle stands and have a good look. If it does turn out to be the tubes or one of them it'll be a lot cheaper fix than a top end re-seal.

ATB Smile
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guards red
Hockenheim


Joined: 10 Jan 2008
Posts: 654



PostPosted: Fri Nov 17, 2017 8:25 pm    Post subject: Reply with quote

Hi, I'm afraid that that looks like a case thru bolt leak. These usually happen when the oil get changed from what the car always had to lighter, synthetic oils. Oils with detergents can also clear out the build up of gunk that can lead to leaks.

Only way to fix that is to rebuild the engine...

Try a higher viscosity oil like a 10/50 or even a 15/50 depending on your climate

Regards
GR
 
  
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decgraham
Suzuka


Joined: 17 Sep 2008
Posts: 1101
Location: Spain


PostPosted: Sat Nov 18, 2017 8:05 am    Post subject: Reply with quote

Hi GR,

You are right, my car's original oil was changed and it went over to Mobil 1 0/40, but to be honest that was at least 14/15 years ago when my Indy in Q8 recommended it.

The drip does seem to stop though when the car is fully warmed up.

Thanks for the advice, with the car in Spain I would think that 15/50 would be a bit too much ? but when I next do an oil and filter change I'll try a 10/50. Can you recommend a good brand?

Also, the RHS is as dry as a bone so would you recommend doing both sides or is it worth and can you get away with doing just the LHS ? I realise if the engine is out I should tackle as much as possible but just curious.

ATB Smile
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guards red
Hockenheim


Joined: 10 Jan 2008
Posts: 654



PostPosted: Sun Nov 19, 2017 8:32 am    Post subject: Reply with quote

Hi ATB,

You could strip down all of one side of the engine, once the cam carrier if off you could remove the barrel above that case bolt but it would not be a good idea. It would be a huge amount of work and when you're that far in it's make sense to rebuild it.

As for oil, the warmer the climate the thicker the oil you can get away with. A 10/50 Will be fine. Porsche used those oils on the 964 if I member rightly. Mobil 1 0/40 was never the best oil for air cooled engines, especially as they get older. That however is just my opinion.

The Mobil 1 Motorsport oil is excellent in these engines. Or Millers Nano tech oils which are reassuring expensive.

Regards
GR
 
  
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guards red
Hockenheim


Joined: 10 Jan 2008
Posts: 654



PostPosted: Sun Nov 19, 2017 8:33 am    Post subject: Reply with quote

Hi ATB,

You could strip down all of one side of the engine, once the cam carrier if off you could remove the barrel above that case bolt but it would not be a good idea. It would be a huge amount of work and when you're that far in it's make sense to rebuild it.

As for oil, the warmer the climate the thicker the oil you can get away with. A 10/50 Will be fine. Porsche used those oils on the 964 if I member rightly. Mobil 1 0/40 was never the best oil for air cooled engines, especially as they get older. That however is just my opinion.

The Mobil 1 Motorsport oil is excellent in these engines. Or Millers Nano tech oils which are reassuring expensive.

Regards
GR
 
  
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decgraham
Suzuka


Joined: 17 Sep 2008
Posts: 1101
Location: Spain


PostPosted: Sun Nov 19, 2017 10:02 am    Post subject: Reply with quote

Hi GR,

Thanks for coming back to me. I hear what you say so I'll look into a rebuild in the future. As I said before I'll use one of the thicker oils next time I do an oil and filter change. For now I'll live with the drip.

ATB Smile
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decgraham
Suzuka


Joined: 17 Sep 2008
Posts: 1101
Location: Spain


PostPosted: Sun Nov 19, 2017 10:26 am    Post subject: Reply with quote

Hi All,

Just to bring this to a conclusion below are 2 pictures of the amount of oil that was in my "catching tray" and the piece of kitchen role I used to wipe it out after a good run out yesterday. The car had sat from 2.00 pm yesterday until 11.00 am this morning.

I can live with this Thumb

ATB Smile
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A993LAD
Nürburgring


Joined: 20 Mar 2007
Posts: 458
Location: Cambs


PostPosted: Mon Nov 20, 2017 9:08 am    Post subject: Reply with quote

My 993 has always leaked a few drops of oil to since we bought it four years ago.

I paid quite a bit of money to various garages who have claimed they know where it's leaking from and changed various gaskets and seals etc. but within a couple of days of getting it back it always carries on dripping.

I gave up worrying about it two years ago when I realised the car was running really well and the amount of oil it loses barely features and doesn't really affect things.

Also, since we acquired a 1930 vintage car which seems to leak oil from everywhere and leaves oily stains on the garage floor at the front, middle and rear of the car I no longer notice the tiny amount is that leaks from the 993. A fellow Lagonda club member quoted that old adage that "if it's not leaking oil it probably has no oil in it".

Ignore it, enjoy driving the car, and don't bother fixing it until you have the engine out for some kind of major work.
 
  
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decgraham
Suzuka


Joined: 17 Sep 2008
Posts: 1101
Location: Spain


PostPosted: Mon Nov 20, 2017 9:42 am    Post subject: Reply with quote

Hi A993LAD,

I think that you are bang on the money with what you say, makes me feel better too so thanks for that. Thumb

I'll live with the leak.

ATB Smile
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