Oil Consumption
- Thread starter plhorner
- Start date
plhorner
Moderator
Consumption wise thats actually quite low, from what I remember the book says they can use up to 1ltr / 1000km !! Now that would get pricey if you were using Mobil 1................ How much is it in France? With regard to viscosity of the oil, I can't remember what I'm using, I'll have a look next time I'm down in the garage.
Guest
New member
Hi Shelby. Don't know if thats normal or not. However, I recently did a 600Kms round trip in my 3.2. My car has covered 121,000Kms and I can honestly say that it shows no sign of any smoke when warm or hot. I get an occasional puff from startup if the cars not been run for 2 weeks or more but thats all. What mileage has yours covered??
bones
New member
When did you last have the car serviced? Before you worry too much make sure your valves are adjusted properly. It shouldn't smoke at all except after a cold start. Oil consumption increases slightly with hard use, i.e. if you cruise at 90mph for say 500 miles (unlikely except on the moon) and your car uses 1/2 ltr of oil then if you do a 500 mile race you could reasonably expect it to use about a further 1/8 ltr or so (all approx figure). My 145,000 miles SC uses about 3/4 ltr every 1,000 miles.
Guest
New member
I have been told that, if you overfill, then the excess gets 'lost' (blown out ?) or burned.
Difficult to ensure this, as I can't normally remeber how much oil there is between min/max, and can't seee how much I have put in anyway (I carry a couple of 1 litre bottles with me, but, as putting oil in is a bit of a pig, even with a flexible 'add on' filler tube, some still drips on the engine).
Mine doesn't smoke, just slowly leaks from the heads (and I do mean slowly, too expensive to fix at the moment), but onto the exhaust, so the car can smell of hot oil a bit - so, I turn the heating off, the a/c on, and shiver to keep warm !
Difficult to ensure this, as I can't normally remeber how much oil there is between min/max, and can't seee how much I have put in anyway (I carry a couple of 1 litre bottles with me, but, as putting oil in is a bit of a pig, even with a flexible 'add on' filler tube, some still drips on the engine).
Mine doesn't smoke, just slowly leaks from the heads (and I do mean slowly, too expensive to fix at the moment), but onto the exhaust, so the car can smell of hot oil a bit - so, I turn the heating off, the a/c on, and shiver to keep warm !
Guest
New member
Shelby,
Hi there Dude-
Experience has taught me that an oil leak from the tappet/cam covers can look like a "head" leak. But, what was actually leaking were the rocker shafts. These little beauties hold the cam followers/tappets- (pivot) and there are 3 off these on each side (one per cyl). Now these shafts are located in ports which are open to the outside of the motor! (each of these has 2x holes to the outside, therefore a total of 12 holes for oil to leak from!!) So what this means is if these shafts are loose or not central in their ports they will pass oil to the outside.[:'(]
Ok then, these are easy to check providing you have drained the oil and taken the tappet covers off. Each shaft is held in location by a clever wedge (cone) type nut. As the shaft bolt is tightened it pulls the cone into the shaft causing it to swell in diameter; therefore locking into the passage way. If the shaft moves one way or the other then tension can be lost and the shaft will leak oil.[
]
You need 2 allen keys to tension these babies - I think a 6mm and a 8mm. Move each shaft so it is central to the passage and re-tension. No doubt Porsche will have a method/tool for doing this, with the associated $$$$$$ value added - but all you need is some patience and grunt.
If the 2 front shafts are leaking you will find the tin-ware blocking your access, you can gain access to these by simply drilling a 10mm hole through the tin - inline with the socket head of the shaft. Then its easy, doesn't cause any harm, and is there next time you do the tappets.
Peter
Hi there Dude-
Experience has taught me that an oil leak from the tappet/cam covers can look like a "head" leak. But, what was actually leaking were the rocker shafts. These little beauties hold the cam followers/tappets- (pivot) and there are 3 off these on each side (one per cyl). Now these shafts are located in ports which are open to the outside of the motor! (each of these has 2x holes to the outside, therefore a total of 12 holes for oil to leak from!!) So what this means is if these shafts are loose or not central in their ports they will pass oil to the outside.[:'(]
Ok then, these are easy to check providing you have drained the oil and taken the tappet covers off. Each shaft is held in location by a clever wedge (cone) type nut. As the shaft bolt is tightened it pulls the cone into the shaft causing it to swell in diameter; therefore locking into the passage way. If the shaft moves one way or the other then tension can be lost and the shaft will leak oil.[
]You need 2 allen keys to tension these babies - I think a 6mm and a 8mm. Move each shaft so it is central to the passage and re-tension. No doubt Porsche will have a method/tool for doing this, with the associated $$$$$$ value added - but all you need is some patience and grunt.
If the 2 front shafts are leaking you will find the tin-ware blocking your access, you can gain access to these by simply drilling a 10mm hole through the tin - inline with the socket head of the shaft. Then its easy, doesn't cause any harm, and is there next time you do the tappets.
Peter
IanHighfield
New member
Just a quick query regarding oil consumption, or in my case, a lack of it.
I keep a regular eye on the level (hot engine at idle, oil level is between the two marks on the dip stick as per manuual) in my 86 Coupe, and have only just needed to add one litre of oil after nearly 6,000 miles.
This seems at odds with the 1 litre per 1,000 miles that others quote.
Should the engine be using more oil ? I had the return pipe and cam return pipes replaced at PCT and the car has no oil leaks, and blows no smoke.
Odd to ask if it should use more oil, but just curious.
I keep a regular eye on the level (hot engine at idle, oil level is between the two marks on the dip stick as per manuual) in my 86 Coupe, and have only just needed to add one litre of oil after nearly 6,000 miles.
This seems at odds with the 1 litre per 1,000 miles that others quote.
Should the engine be using more oil ? I had the return pipe and cam return pipes replaced at PCT and the car has no oil leaks, and blows no smoke.
Odd to ask if it should use more oil, but just curious.
Martin Perry
New member
Ian
Must be a good sign, surely. The general advice is that 911 engines burning oil is not in itself a bad sign, but I'm sure (although no doubt someone more mecanically qualified will set me straight) they weren't designed to do it.
Yours obviously just needs running in!
Martin
Must be a good sign, surely. The general advice is that 911 engines burning oil is not in itself a bad sign, but I'm sure (although no doubt someone more mecanically qualified will set me straight) they weren't designed to do it.
Yours obviously just needs running in!
Martin
IanHighfield
New member
Thanks Guys.
Martin - just running in at 135,000 miles. Car runs so well that I cannot belive it has done this many miles.
Martin - just running in at 135,000 miles. Car runs so well that I cannot belive it has done this many miles.
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