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Engine Oil advise

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emyrmorris
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emyrmorris PCGB Member
2020/03/01 22:41:53 (permalink)

Engine Oil advise

Hi, 
For some unknown reason started reading different forums on engine oil for my 1994 C2 Tip with 73K miles.  I am now totally confused !!!
For the last 10 years I have been following the standard recommendation of Mobil 1 0W 40 and have had absolutely no issues in terms of leaks, engine noise or oil pressure.  I hear you ask well what's the problem, just stick to the same.  Well I am curious as when the engine is incurring wear( not that my car is a high mileage example) is it advisable to change the viscosity of the oil.  One of the things I did read is that 0W 40 being a thinner oil is designed for colder climate and means that the tappets take longer to load up with a more tapping noise until they are up to full pressure - something I do experience - although I never over rev the engine until it is up to pressure.  Would be interested to hear your viewpoint on this subject.

3 Replies

MoC2S
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Re: Engine Oil advise 2020/03/02 11:58:00 (permalink)
Porsche are unequivocal about their recommendations, and regularly publish lists of approved oils by region. Nothing confusing there .. with regard to the 993 hydraulic tappets, the recommended 0W or 5W oils get into the oilways more quickly on cold start to fill the tappets. As the seals deteriorate on the tappets they will allow them to drain more quickly also, so they can rattle for a little while. Not beyond possibility that one or more seals are failing at 25 years & 73K miles, and not the end of the world if they need replacing.
 
But if they go quiet reasonably quickly, don't worry!
 
More info here - https://www.porscheclubgb.com/forum/tm.aspx?m=112471
                        https://www.porscheclubgb.com/forum/tm.aspx?m=131789
                        https://www.porscheclubgb...orum/tm.aspx?m=1009559
 
Stay away from forums, they are dangerous places ! .. .. many are fact-free !
 
cheers, Maurice
 

Maurice Piper
993 Register Secretary 2003-2020
993 Assistant Register Secretary 2001-2003
' Wild things are always faster'
from ' Two Dogs' by Philip Hodgins
MoC2S
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Re: Engine Oil advise 2020/03/02 12:02:02 (permalink)
Oh, and the trolls will be along in a bit (this is always a controversial subject despite the facts) so I'll probably lock the thread after a while ..

Maurice Piper
993 Register Secretary 2003-2020
993 Assistant Register Secretary 2001-2003
' Wild things are always faster'
from ' Two Dogs' by Philip Hodgins
emyrmorris
PCGB Member
  • Total Posts : 23
  • Joined: 2015/06/29 19:39:13
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emyrmorris PCGB Member
Re: Engine Oil advise 2020/03/02 21:58:36 (permalink)
Many thanks for your reply and enclosed information.  Your point regarding the 'so called' experts on some of these forums is very valid - that will teach me a lesson to start reading too much into these things!  I will stick with the Mobil 1 as I have always done.  The tappet issue is not really an issue - certainly based on what you have stated.  Thanks for your assistance
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