16 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHHow often do you change your oil?
Leading reported evidence
Replace oil once per eyar (about 5k miles)
Performed · outcome unconfirmed
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that performed work without a confirmed outcome
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Performed · outcome unconfirmed
In my boxster, I have changed the oil once per eyar (about 5k miles).
Leading evidence: 'Replace oil once per eyar (about 5k miles)' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace filter also or just the oil' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
Source reports, not a diagnosis or a success probability. Counts refer to discussions and can overlap.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that performed work without a confirmed outcome
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion
I change my oil after every track event that puts more than 30 minutes on the engine.
Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.
16 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Rennlist: 1 discussions
0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.
0 acknowledgements have no verified action link; they do not establish a repair result.
Generation: 20261026T122219Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
First oil change on my 02 C4 Cab was at 2500 miles. I also had my oil tested for impurities. I had some impurities in oil and plan to change again at 5K and have oil tested again. I'm just paranoid.
Getting the oil analyzed is very inexpensive.
Check out: <a href="http://members.rennlist.com/oil/" target="_blank">http://members.rennlist.com/oil/</a>
Thanks for the info Don. Are you changing the filter also or just the oil?
It's a small world. I saw your signature and I spent my summers growing up in Dennisport and West Dennis beach.
I'll change the oil & filter at 5000-7500 mi, then at 12,000 mi, and then every 12,000 mi or yearly interval, which ever comes first.
I had Boxster for 4-1/2 years with 62,000 mi. I followed this regimen and had no problems with the engine.
If you search the oil change topic right, you ought to get a lot of threads on the topic. There seem to be plenty of people who favor all the interval options you mentioned, plus the option of changing at the once per year service (for those not driving many miles per year). Feel free to pick the interval that makes you most comfortable, so you'll sleep better. If I used my car only on the road, I think I'd feel comfortable with either the 5k interval or the 7.5k interval.
I think the real question is how hard do you drive your car and the enviroment which you live in. So, ask yourself these questions and then you should get an idea.
The 15k seems a bit much for me since I drive it hard and lot of stop and go driving. So, I am on the 7.5k interval but if you are driving mostly on the highway then go with longer.
by my side i'm going also for un interval of 7.5k.
Ckl93 : did you have a oil leaking problem? i think you talked about in another tread..So what you find out?
tks for the info.
For Ckl93...it is a small world. Yes, I do change the filter each time. Like I said, I'm paranoid + as you know down on the Cape the sand blows around a lot, and in fact did show up in my oil (silica), so I'm extra special careful about oil. I'm in Dennis and usually go to the beaches on the Bay side.
Bilstein 996C4, yes I do have an oil leak, I see small patches of oil on my garage floor...taking it to the dealership this Friday, so I'll let you know what they say.
Bilstein 996C4, yes I do have an oil leak, I see small patches of oil on my garage floor...taking it to the dealership this Friday, so I'll let you know what they say.
Cool,Ckl93, in that way we will now the true about this problem. So it's normal a small oil leaking, how much is normal!? or wherever!
This is going to be a question of mine too. In my boxster, I have changed the oil once per eyar (about 5k miles). Now that I am doing less miles and more track time, how often should I change it? How often would / do you change the oil in a cup car? Every race, 100 hours? In my speedboat I change the oil every 25 hours. Shold I look to do the same on the 996? Every 25 hours is probably 1500 miles? That would probably be twice a year for me, which seems very reasonable. Any insight? <img src="graemlins/burnout.gif" border="0" alt="[burnout]" />
Ed,
My 2 cents...
I change my oil after every track event that puts more than 30 minutes on the engine. This is the most stress your oil (and car) can have and cheap insurance. After a track event your oil is not likely dirty it is weakened by the heat lessening it's ability to lubricate.
Loren (99 996)