Thread: 30w oil
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Old 02-07-2019, 03:05 PM   #13
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Join Date: Jan 2019
Location: Germany, near Aachen
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Default Re: 30w oil


I am not sure if I have understood the core question correctly.

For vintage cars, a low viscosity can have the disadvantage that the shaft bearings leak leaking oil. Otherwise, a multi-grade oil is always better than a single range.

The most important is the API classification. Because of the non-ferrous metal compatibility. You should not go higher than "SC". Petrol engine oil API SC has anti-corrosion inhibitor, detergent cleaner, HD heavy duty additives. That is enough!

However, the oil still has to be changed many times (max. <1000 miles) because it runs without a filter and only then can the abrasion chips be taken out.
Beste Gruesse aus Deutschland,

Ford Model A Roadster, 1928
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