25 November 2025

Compression

Accidentally stumbled upon something interesting...

2011 to 2013 Caprice PPV fuel recommendation is 87 octane.

2014 to 2017 Caprice PPV fuel recommendation for V8 engines is premium 91 octane.

From what I've been reading the fuel tables are the same for all years.

The engines are mechanically identical.

I think they use the same PCM. 

My "runs smoother" feeling seems to have some empirical basis to it.

Posted by Angus McThag at 11:35
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1 comment:

  1. Cmn¢¢guy25 November, 2025 12:08

    Not all fuel brands are good. https://www.youtube.com/watch?v=_mAEdnjKzsE

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