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YOUR RESEARCHmobil 1 oil - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Leading reported evidence

Replace list

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Performed · outcome unconfirmed
In June 2001 Porsche changed the list.
Original post Read captured discussion
mobil 1 oil - 986 Forum - The Community for Porsche Boxster & Cayman Owners

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Check with them

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Suggestion
I don't know if that is a national chain or not, but if it is, you might check with them.
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mobil 1 oil - 986 Forum - The Community for Porsche Boxster & Cayman Owners

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Leading evidence: 'Replace list' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check with them' (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.

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Check with them

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Suggestion
I don't know if that is a national chain or not, but if it is, you might check with them.
Original post Read captured discussion
mobil 1 oil - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Recommend oil

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Suggestion
Mobil 1, 0w-40 is Porsches' recommended oil.
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mobil 1 oil - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Use 0w-40 mobil 1 in it

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Suggestion
I have a '99 Boxster with almost 50K on it and use 0W-40 Mobil 1 in it.
Original post Read captured discussion
mobil 1 oil - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Use 15w-50 as i live in sometimes sunny california

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Suggestion
I still use 15W-50 as I live in sometimes sunny California.
Original post Read captured discussion
mobil 1 oil - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Frequently discussed actions (6)

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Check with them

No successful repair reported for this finding.

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Reported fixes: 0
Unsuccessful attempts: 1
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Discussions that contain suggestions: 1

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Suggestion
I don't know if that is a national chain or not, but if it is, you might check with them.
Original post Read captured discussion
mobil 1 oil - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Recommend oil

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Suggestion
Mobil 1, 0w-40 is Porsches' recommended oil.
Original post Read captured discussion
mobil 1 oil - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Replace list

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

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 June 2001 Porsche changed the list.
Original post Read captured discussion
mobil 1 oil - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Use 0w-40 mobil 1 in it

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

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 have a '99 Boxster with almost 50K on it and use 0W-40 Mobil 1 in it.
Original post Read captured discussion
mobil 1 oil - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Use 15w-50 as i live in sometimes sunny california

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

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 still use 15W-50 as I live in sometimes sunny California.
Original post Read captured discussion
mobil 1 oil - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Use castrol

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Discussions that contain suggestions: 1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

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Suggestion
With your wide range of temps I would use the Castrol.
Original post Read captured discussion
mobil 1 oil - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Coverage and how to read this overview

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.

5 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.

986Forum: 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: 20261026T165820Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Which grade should I be using. I have a 2000 Boxster S, with 25k, and live in Connecticut. I don't drive the car in the winter, except to get it out. Also, does anybody know I place for service in the Connecticut area (New Haven). Should I get the 30k service now or wait until next year? Love the board!!

POST 2Original post

I have a '99 Boxster with almost 50K on it and use 0W-40 Mobil 1 in it. I think this is the vicosity that most people are using, but someone else may have another take on that.

POST 3Original post

Mobil 1, 0w-40 is Porsches' recommended oil. It is not easy to find, but I have seen it on-line and at a few local supply houses.

POST 4Original post

I found Mobil 1 0W-40 locally here in Southern California at AutoZone. I don't know if that is a national chain or not, but if it is, you might check with them.

POST 5Original post

Mobil One 15W-50, 5W-30, and 10W-30 had been the Mobil brand oils approved by Porsche for many years, along with other brands, such as Castrol. In June 2001 Porsche changed the list. The Mobil One approved is now 0W-40 and 5W-40. I still use 15W-50 as I live in sometimes sunny California. Castrol 5W-50 was and still is an approved oil. With your wide range of temps I would use the Castrol. Jeff

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