12 captured repliesPartial discussion capture · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHcastrol magnatec? - Page 1 - Porsche General - PistonHeads UK
Leading reported evidence
Use another synthetic oil, not sure
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
The previous owner used another synthetic oil, not sure which brand.
castrol magnatec? - Page 1 - Porsche General - PistonHeads UK
Frequently discussed work
Replace had not renewed the sealing washer
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'm on synth in mine at the moment Danny, but i think it might benefit from a thicker oil, they say these thin tend to find all the leaks, BTW am getting mine back after a 5WEEK break, it was parked up in a hanger for 3 weeks before they even looked at it, and in that time had actually dumped a square metre of oil on his nice floor, the last oil change had not renewed the sealing washer under the oil tank in rear wing they cost about 10P
castrol magnatec? - Page 1 - Porsche General - PistonHeads UK
Read full discussion summary
Leading evidence: 'Use another synthetic oil, not sure' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace had not renewed the sealing washer' (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.
Performed · outcome unconfirmed
I use Magnatec in my TVR with a Rover V8 lump (really old technology - runs at low pressure, and known to have camshaft lube probs at startup), but Mobil 1 in '81 SC.
castrol magnatec? - Page 1 - Porsche General - PistonHeads UK
Replace had not renewed the sealing washer
Suggestion or failed attempt
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 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'm on synth in mine at the moment Danny, but i think it might benefit from a thicker oil, they say these thin tend to find all the leaks, BTW am getting mine back after a 5WEEK break, it was parked up in a hanger for 3 weeks before they even looked at it, and in that time had actually dumped a square metre of oil on his nice floor, the last oil change had not renewed the sealing washer under the oil tank in rear wing they cost about 10P
castrol magnatec? - Page 1 - Porsche General - PistonHeads UK
Replace time its unecessarly expensive too
Suggestion or failed attempt
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 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
Also with the amount of oil an aircooled 911 needs at oil change time its unecessarly expensive too.
castrol magnatec? - Page 1 - Porsche General - PistonHeads UK
Use mobil 1 as it was too thin
Suggestion or failed attempt
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 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
When I had an '86 3.2, my OPC told me not to use Mobil 1 as it was too thin.
castrol magnatec? - Page 1 - Porsche General - PistonHeads UK
Frequently discussed actions (5)
These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.
Replace had not renewed the sealing washer
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'm on synth in mine at the moment Danny, but i think it might benefit from a thicker oil, they say these thin tend to find all the leaks, BTW am getting mine back after a 5WEEK break, it was parked up in a hanger for 3 weeks before they even looked at it, and in that time had actually dumped a square metre of oil on his nice floor, the last oil change had not renewed the sealing washer under the oil tank in rear wing they cost about 10P
castrol magnatec? - Page 1 - Porsche General - PistonHeads UK
Use magnatec in my tvr
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
I use Magnatec in my TVR with a Rover V8 lump (really old technology - runs at low pressure, and known to have camshaft lube probs at startup), but Mobil 1 in '81 SC.
castrol magnatec? - Page 1 - Porsche General - PistonHeads UK
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.
12 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
PistonHeads: 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: 20261026T203514Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
I use it in my turbo on the recommendation of JZ Machtech who look after it for me. They certainly seem to know their stuff so it can't be too bad.
All I can tell you is the engine hasn't blown up so far (reaching for a piece of wood to touch now!)
Chris
I use Magnatec in my TVR with a Rover V8 lump (really old technology - runs at low pressure, and known to have camshaft lube probs at startup), but Mobil 1 in '81 SC.
I can't see the point in skimping on a modern engine.
Danny
Yip mobil 1 is a bit too thin for a SC, it will tend to find leaks through gaskets, joints & seals that thicker oils willl not.
Also with the amount of oil an aircooled 911 needs at oil change time its unecessarly expensive too. Magnatec or one of the other quality semi synthetics will be fine for it.
My 1981 3.0 SC had slight oil leaks, which didn't get worse when I put Mobil 1 in. The previous owner used another synthetic oil, not sure which brand.
Danny
i'm on synth in mine at the moment Danny, but i think it might benefit from a thicker oil, they say these thin tend to find all the leaks, BTW am getting mine back after a 5WEEK break, it was parked up in a hanger for 3 weeks before they even looked at it, and in that time had actually dumped a square metre of oil on his nice floor, the last oil change had not renewed the sealing washer under the oil tank in rear wing they cost about 10P
Ouch - that sounds like it will need some attention. You might improve the situation with thicker oil, but if it is leaking that badly I at least find out where from and think about fixing it (hopefully nothing major)
just topped up my thirsty boxster s with some mobil 1 (£25 for 4ltr) and saw in costco that magnatec is half the price? Is this oil any good? does anyone use it?
This is a source reference. Confirm exact model applicability in the original material.
