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THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
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YOUR RESEARCHAdditives - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Leading reported evidence
Check back in again in a few days
Suggestion or failed attempt
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0
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0
Unsuccessful attempts
1
Discussions
Read evidence and context
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Discussions that contain suggestions
1
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Additives - 986 Forum - The Community for Porsche Boxster & Cayman Owners
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Leading evidence: 'Check back in again in a few days' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check back in again in a few days' (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.
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1
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Suggestion
Jake, I am still planning on buying a case of this DT40 (5W40) from Charles for my yearly oil change next month.
Additives - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Run mobil 5w50
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Suggestion
I am also running Mobil 5W50 with excellent UOA's (slight improvement over Red Line 5W40).
Additives - 986 Forum - The Community for Porsche Boxster & Cayman Owners
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Suggestion
We also had a particulate test carried out to see even more about what happens...
Additives - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Test requirements
Suggestion or failed attempt
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Suggestion
If you live somewhere that doesn't have emissions testing requirements, this may not concern you.
Additives - 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.
16 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
986Forum: 1 discussions
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Generation: 20261027T011819Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
If everything that I have read and if I understand it correctly, Z-Max works by introducing zinc compounds into the oil. These are anti-wear additives. The oil companies reduced these compounds in their oils because they can ruin catalytic converters if they coat the platinum mesh in the converters.
So the choice is to help protect the engine and risk ruining the expensive catalytic converters, or use a high quality oil and change it regularly.
If you live somewhere that doesn't have emissions testing requirements, this may not concern you.
Zmax oil additive does not contain any ZDDP, or much else for that matter; most analysis says it is refined mineral oil with a coloring dye in it. The product is also the subject of an FTC investigation concerning the validity of its advertising claims.
An additive is the quickest way to compromise the anti-wear and detergency packages of the oil.
According to the API the only time it's acceptable to use any oil additive is never.
ZDDP was invented in 1941 by Lubrizol.. Lubrizol is the company who formulates and produces the Joe Gibbs offerings, to include our DT40 offering.
Thanks all for the insight. I saw a commercial for it and was wondering how many use. I cant imagine it working to actually do anything or I think the OEMs would push it too...
Jake, I am still planning on buying a case of this DT40 (5W40) from Charles for my yearly oil change next month.
Can you post a VOA? Or at least tell me the levels, in PPM, of your Zinc and Phosphorus? I'm hoping it's about 1,100 PPM for both, and on par with my current Mobil 5W50. Thank you.
Here is the High Temperature High Shear data that we gathered comparing DT40 to M1
My machine and back up drive that has all the VOA and UOA data was struck by lightning last Monday... I'll post both when it comes back online. Lets just say that the zinc levels of the DT40 are greater after 12 hours of on track service with temps north of 250F than what you stated your target would be. No exaggeration.
Excellent question. I am also running Mobil 5W50 with excellent UOA's (slight improvement over Red Line 5W40). I plan on trying Jake's new oil DT40 for the next 2 years to compare.
I'll pat te VOA with UOA from a comparison I recently did that included 5,200 start cycles for one of our M96 engines. I have VOA from that DT40 oil as well as UoA from 739 miles of driving and 75 dyno runs, then data of the same oil after 5,200 starts. We also had a particulate test carried out to see even more about what happens...
This wasn't an oil test, but the evaluation ended up being multifaceted and very informative.
This is a source reference. Confirm exact model applicability in the original material.
