Oil Change/Interval Questions
11-09-2007, 07:26 AM
#31
Rennlist Member
Ditto-I drive around 2K year, store it in the winter. Best to change before you strore so you do not have deposits or old oil sitting in the engine over time.
11-09-2007, 07:31 AM
#32
Rennlist Member
My service advisor at the dealer I have been taking my car to for the last 6 years for oil changes (Pioneer Porsche in San Diego) told me the last time I was in there that Porsche has officially changed the recommended oil change intervals for 993s to every TWO years, or 15,000 miles, whichever comes first.
When a dealer tells me they want to work on my car LESS often I tend to believe it's a legitimate recommendation. Of course, they overfilled the sumab**ch the last time I brought it in so they're not going to get another look at my car again anyway....
Mark
'98 C4 Cab
When a dealer tells me they want to work on my car LESS often I tend to believe it's a legitimate recommendation. Of course, they overfilled the sumab**ch the last time I brought it in so they're not going to get another look at my car again anyway....
Mark
'98 C4 Cab
11-09-2007, 08:32 AM
#33
Rennlist Member
Thread Starter
A-hah! That is the definative answer to my second question! (Ref: Changing the secondary filter on alternating oil changes.) Thanks, Dan.
In summary, it appears that changing synthetic oil and main filter every two years and secondary filter every four years is fine for low useage cars.
I don't even want to hazard a guess as to exactly how many miles is the maximum for this "low usage" oil service schedule, but suspect it would be around 3000 to 4000 miles per year(?).
Again, not looking to be cheap, just wanting to find the point where one is simply throwing money and time down the drain.
-Jim
In summary, it appears that changing synthetic oil and main filter every two years and secondary filter every four years is fine for low useage cars.
I don't even want to hazard a guess as to exactly how many miles is the maximum for this "low usage" oil service schedule, but suspect it would be around 3000 to 4000 miles per year(?).
Again, not looking to be cheap, just wanting to find the point where one is simply throwing money and time down the drain.
-Jim
11-09-2007, 12:28 PM
#35
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David,
FYI I believe the oil temp needs to be more than off the peg before you start to redline the motor.
There is a small mark about 2-3 mm north of the bottom and according to the owner's manual -- (I think -- or maybe the dealer told me this) -- one should not exceed 4200 rpm until the temp level is at or past this mark.
Mark
'98 C4 Cab
FYI I believe the oil temp needs to be more than off the peg before you start to redline the motor.
There is a small mark about 2-3 mm north of the bottom and according to the owner's manual -- (I think -- or maybe the dealer told me this) -- one should not exceed 4200 rpm until the temp level is at or past this mark.
Mark
'98 C4 Cab
11-09-2007, 12:33 PM
#36
Weathergirl
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I guess it depends what oil temp is adequate for full protection. I always assumed that number was around 150° F.
11-09-2007, 01:48 PM
#37
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Thread Starter
"Peace of mind" comes from actually knowing. If one doesn't know but assumes, it's more akin to "ignorance is bliss". If one doesn't know, not sure or makes assumptions, overkill is sometimes better (and occasionally worse) than underkill, but it's not a substitute for actually knowing. As my grandfather was fond of saying, "What you don't have in your head, you need to have in your wallet".
11-09-2007, 02:12 PM
#39
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Well... I change my oil once every 7500 miles because I actually drive my car. For a 993 that's on the same driving catagory as a Ferrari 1500 / year and if you are super concerned about a clean perfect record then change your oil once a year, from a practical point once / 2 years is way frequent as it is.
It is the moisture condensation that kills the oil, each time you start the car and not let it really heat up moisture will form and be trapped in the oil and that's causes the oil to degrade. So if you drive your car very little you will have more moisture contanmination issue with your oil which will require you to change it more often.
It is the moisture condensation that kills the oil, each time you start the car and not let it really heat up moisture will form and be trapped in the oil and that's causes the oil to degrade. So if you drive your car very little you will have more moisture contanmination issue with your oil which will require you to change it more often.
11-09-2007, 02:49 PM
#40
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+1 on Robin's thoughts.
I never drive my car unless I know I will get it to highway speeds, and put at least 30 miles on it. Since I live only 1/2 mile from work and less than 1 mile from 90% of everything else I do, that means I hardly ever drive the car anymore (approx 1500 miles/yr now).
I've gone to the every 2 yr schedule because of these factors, and because it is Porsche-approved.
Mark
(Now a Rennlist Member!)
I never drive my car unless I know I will get it to highway speeds, and put at least 30 miles on it. Since I live only 1/2 mile from work and less than 1 mile from 90% of everything else I do, that means I hardly ever drive the car anymore (approx 1500 miles/yr now).
I've gone to the every 2 yr schedule because of these factors, and because it is Porsche-approved.
Mark
(Now a Rennlist Member!)
11-09-2007, 04:24 PM
#41
Noodle Jr.
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On a side note my neighbor has a 29 ford street rod that every month or so he starts it up and lets it idle for like 15 minutes then shuts it off. If he can get away with that and it still runs we are all in good shape!
11-09-2007, 04:38 PM
#42
Rennlist Member
I put ~5k/yr on each car. I change the oil every 5k.
11-10-2007, 09:00 AM
#43
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thanks Mark. right and i treat it like my IO520 in the Meyers. its warm, then it goes, and the peg was the second line... i keep it under 3500 until then [ 15-50 mobile 1].
agreed thanks ds
agreed thanks ds
