Does anyone have info to what Porsche's testing involves for the C20 and C30 approval? Are the bench tests the same as for A40?
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Porsche C20 and C30 engine tests
- Thread starter Overfill
- Start date
From a viscosity standpoint here's what flavors Mobil offers. Not for certain what the tests involve. Possibly mainly HT/HS & SAPS levels. I'd imagine they have different requirements for their respective applications.
- 0W-20 advanced full synthetic motor oil approved against Porsche spec C20.
- 0W-30 and 5W-30 advanced full synthetic motor oils approved against Porsche spec C30
- 0W-40, 5W-40 and 5W-50 advanced full synthetic motor oils approved against Porsche spec A40
edyvw
$50 site donor 2025
No. A40 has Nordschlife simulation test.
C20 and C30 go hand in hand with VW508.00/509.00 nad VW504.00/507.00.
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AZjeff
$50 Site Donor 2023
Lubrizol spider graph of 50800 & C20. Porsche not worried about LSPI.
You really are bloated 
Are 508/509 subject to VW's Baumusterprüfung? (~650hrs). I would've thought Porsche would've had their own bench test--what sets apart C20 and C30?
edyvw
$50 site donor 2025
I think it is (I think!).
What sets apart C20 and C30? One is 0W20, another 0/5W30, min HTHS 3.5cp.
I mean, what sets it apart from ACEA 'parent' specs C5/C6 and C3?
edyvw
$50 site donor 2025
Same, HTHS=fuel efficiency requirements. ACEA C5/6 has higher LSPI demands. But don't forget, ACEA is just a start.
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