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YOUR RESEARCHMotorcycle oils in a Boxster - 986 Forum - The Community for Porsche Boxster & Cayman Owners
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Install with cats, yet the motorcycle synthetic oils don't seem
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Performed · outcome unconfirmed · Original poster
A lot of new motorcycles are now fitted with cats, yet the motorcycle synthetic oils don't seem to damage them.
Motorcycle oils in a Boxster - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Frequently discussed work
Fill of mc oil would likely destroy the catalytic converters
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Suggestion
I believe I read that Charles Navarro (LN Engineering) stated you can do a 50/50 mix of automotive and motorcycle oil, but a full fill of MC oil would likely destroy the catalytic converters.
Motorcycle oils in a Boxster - 986 Forum - The Community for Porsche Boxster & Cayman Owners
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Leading evidence: 'Install with cats, yet the motorcycle synthetic oils don't seem' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Fill of mc oil would likely destroy the catalytic converters' (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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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.
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As much as I like oil threads, I don't see the logic of putting an oil designed and tested for MC in a Boxster engine, long known for its fragility.
Motorcycle oils in a Boxster - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Use ones
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Motorcycle oils in a Boxster - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Fill of mc oil would likely destroy the catalytic converters
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Suggestion
I believe I read that Charles Navarro (LN Engineering) stated you can do a 50/50 mix of automotive and motorcycle oil, but a full fill of MC oil would likely destroy the catalytic converters.
Motorcycle oils in a Boxster - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Lubricate gearbox
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Suggestion · Original poster
I don't want to start another oil thread war, but one thing that seems to be a common opinion is many of the well known performance car lubricants have lost their synthetic Group IV rating and it occured to me that the motorcycle oils may still have the higher specs because of the higher temperaturs and the shearing problems associated with the oil that also lubricates the gearbox.
Motorcycle oils in a Boxster - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Frequently discussed actions (9)
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Fill of mc oil would likely destroy the catalytic converters
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 believe I read that Charles Navarro (LN Engineering) stated you can do a 50/50 mix of automotive and motorcycle oil, but a full fill of MC oil would likely destroy the catalytic converters.
Motorcycle oils in a Boxster - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Lubricate gearbox
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 · Original poster
I don't want to start another oil thread war, but one thing that seems to be a common opinion is many of the well known performance car lubricants have lost their synthetic Group IV rating and it occured to me that the motorcycle oils may still have the higher specs because of the higher temperaturs and the shearing problems associated with the oil that also lubricates the gearbox.
Motorcycle oils in a Boxster - 986 Forum - The Community for Porsche Boxster & Cayman Owners
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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.
7 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
986Forum: 1 discussions
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I've been using Motul oils in my bikes for many years. I see by the specs that they contain more of the "older" addatives that used to be in car lubricants a few years ago.
For instance Motul 3000V Factory Line oil is either a 10w40 or 15w50 API SL & Jaso MA which I use in my MV Agusta. Bike engines tend to run hotter and rev higher than their equivalent 4 wheel counterparts.
Anyone know the disadvantages (if any) of using a motorcycle oil in a car like the Boxster?
The big disadvantage is that this is an unknown. Do you want to experiment with you Boxster engine? If so, why?
As much as I like oil threads, I don't see the logic of putting an oil designed and tested for MC in a Boxster engine, long known for its fragility.
That said, let us know how it turns out.
I believe I read that Charles Navarro (LN Engineering) stated you can do a 50/50 mix of automotive and motorcycle oil, but a full fill of MC oil would likely destroy the catalytic converters.
Check out his oil topics at
www.lnengineering.com
BTW, I was at a PCA Tech clinic yesterday where Charles gave a talk about motor oils...always an interesting topic, as our host mentioned.
Dang, that Motul fill is expensive!
A lot of new motorcycles are now fitted with cats, yet the motorcycle synthetic oils don't seem to damage them.
I don't want to start another oil thread war, but one thing that seems to be a common opinion is many of the well known performance car lubricants have lost their synthetic Group IV rating and it occured to me that the motorcycle oils may still have the higher specs because of the higher temperaturs and the shearing problems associated with the oil that also lubricates the gearbox.
Your right about the price of Motul bike oils - if you think its expensive in the US, its about the same price of a new kidney here in Australia......
The bike oils typically do have more ZDDP than newer car oils, but I would suspect that as more and more bikes get cats, that the ZDDP may wind up being yanked from those oils sooner or later too. As to it causing any harm, I would imagine probably not, but understand that they are two very different applications.
For what it's worth, I know of several people who claim that modern diesel oils are excellent for use in your car too, especially if it's used in a long service interval, due to their ability to hold particulate matter in suspension, along with higher ZDDP packages.
I would feel more comfortable running an excellent car oil, that is high in ZDDP, over using bike or diesel oil in my car.
