I finally filled my project car will oil. I recently replaced the oil pan gasket. I decided to go with AMSOIL 20W 50. This oil has outstanding protection. One thing I like about it is that it is also designed to prevent corrosion for classic cars. The high Zinc levels help also help protect this engine. The Porsche 928 S4 is a 32 Valve V8. That is insane to think this engine was around in the 1980s.
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