Engine longevity - '95 993
06-30-2009, 12:38 PM
#16
RL Technical Advisor
15w-40, 15w-50, or 20w-50 are fine for all-weather use unless you drive in near arctic conditions.
The issues are related to main bearing wear.
07-01-2009, 07:48 PM
#21
R.I.P
Rennlist Member
Rennlist Member
Make sure the car is warmed up, and then drive it hard to keep the revs up. Short jaunts around town running errands with a lot of engine stops and starts aren't the best for it, but again if you get the engine to operating temp first, you can get away with that sort of thing.
247,500 miles and no top end yet. My engine is outlasting my front bumper cover which needs replacing.
07-01-2009, 11:24 PM
#24
Three Wheelin'
07-02-2009, 01:46 AM
#25
Instructor
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R&D of synthetic oil started long time ago. Actually it was by the German during WW2 when their oil routes were cut by the Allies.
German lost the war. Their engineers and technology became trophies to the Allies, American and French to be exact, who continued doing the R&D and the technology became more and more mature in the 1970’s. Any synthetic produced then was as good and its molecules were as strong and die-hard as today’s all synthetic. Only differences are later inventions of additives and those almighty TV commercials.
Synthetic molecules are not only die-hard. They never die. We could in theory use the same oil that came with the car from the assembly line for 20 years. But in practice we cannot. Oil will get dirty and acidy and lose its original properties. We must change it from time to time, the more often the better.
The point I am trying to make here is that all synthetic oils are almost as good. We can just pick any of the Porsche recommended brands and ignore those expensive oils on TV.
If it’s simply for the road and not for the track, a 0W-40 would provide better lubrication than a 5W-60, because the 0W-40 at 100 degrees C (equals 212 degrees F) can already reach the right viscosity and fluid flow to give engine the best lubrication, while the 5W-60 calls for a much higher temperature to be able to do that.
German lost the war. Their engineers and technology became trophies to the Allies, American and French to be exact, who continued doing the R&D and the technology became more and more mature in the 1970’s. Any synthetic produced then was as good and its molecules were as strong and die-hard as today’s all synthetic. Only differences are later inventions of additives and those almighty TV commercials.
Synthetic molecules are not only die-hard. They never die. We could in theory use the same oil that came with the car from the assembly line for 20 years. But in practice we cannot. Oil will get dirty and acidy and lose its original properties. We must change it from time to time, the more often the better.
The point I am trying to make here is that all synthetic oils are almost as good. We can just pick any of the Porsche recommended brands and ignore those expensive oils on TV.
If it’s simply for the road and not for the track, a 0W-40 would provide better lubrication than a 5W-60, because the 0W-40 at 100 degrees C (equals 212 degrees F) can already reach the right viscosity and fluid flow to give engine the best lubrication, while the 5W-60 calls for a much higher temperature to be able to do that.
