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Oily questions...

R

Robertb

Yas Marina
Joined
1 Sep 2003
Messages
8,406
My car is due a 12k service. My local specialist includes semi-synthetic Castrol Magnatec 10w-40 in the menu price, but offers fully synthetic as a chargeable upgrade.

What's best for my 993?

Secondly, I have a sump's worth of unused Mobil 1 in the garage which I never got round to putting in my 3.2 Carrera. Only problem? Bought the oil in 1996! Does oil have a finite life? It's moved house with me twice, so it is of some sentimental value...

Thanks

Robert.


Migration info. Legacy thread was 35844
 
The oil was in the ground for a few million years so a couple in the garage shouldn't hurt!

Migration info. Legacy thread was 35848
 
Haha...Never heard of car oil having sentimental value before!! :D

Migration info. Legacy thread was 35849
 
I went for Mobil 1 0w 40 I beleive the Porsche suggested oil. However other people may disagree.......
There are a few previous threads, put in a search for oil related subjects.

Migration info. Legacy thread was 35852
 
Put Texaco Havoline 10w-40 semi in my car last service on Northway's advise - certainly appears to do exactly 'what it says on the tin' oil consumption has been drastically improved. So on the face of it thicker semi oils would appear to block leaks rather than slip through like thinner synth's. Northway also advised not to mix oils - I had 4 litres of mobil 1 left over and gave it away to fellow 911uk'er.


Migration info. Legacy thread was 35853
 
Previous poster said:
Quote: Originally posted by Robert Bill on 18 October 2005

My car is due a 12k service. My local specialist includes semi-synthetic Castrol Magnatec 10w-40 in the menu price, but offers fully synthetic as a chargeable upgrade.
Click to expand...
although 0W-40 and 5W-40 are the recommended oils, 10W-40 is the cheaper stuff..

but you want to get the Esher based 5W-40 Silkoline Pro S which is Porsche approved, which is what the oil man (simon) has advised, so in about 3.5k miles that is what will be going in !

from his quote to me

"Firstly Mobil 1 0w-40 is a good oil as its a PAO, proper synthetic. The OEM recommendation seems to be 5w-40 but the difference is the 0w test which is down to -35 degC. (5w is -30 degC) You can use either without problems. Could you buy a better oil? Well again tricky, from a synthetics perspective, esters are better as they are surface-active (electrostatically attracted to metal surfaces) this means that a protective layer is there at all times, even during that crucial start-up period. This helps to protect cams, gears, piston rings and valve train components, where lubrication is “boundary” rather than “hydrodynamic”, i.e. a very thin non-pressure fed film has to hold the surface apart. Even crank bearings benefit at starts, stops or when extreme shock loads upset the “hydrodynamic” film. Look at costs before you decide"


Migration info. Legacy thread was 35856
 
On the subject of oil I have read that a warmed up 996 at 5000rpm should have pressure of around 3.0. Mine seems slightly higher than this. Should I be concerned?

Migration info. Legacy thread was 35963
 
My oil pressure varies from about 3 bar at tick over on a warmed up engine to right up the top of the gauge when I boot it.

Migration info. Legacy thread was 35965
 
Thanks Seagull. That seems to be what mine is doing.

BTW not sure if I will be able to do the Curry meet so guess you WILL be the only 996 Targa there. Let me know next time you are passing Gatwick so at least we can see another of our cars on the road.






Migration info. Legacy thread was 35966
 
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