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**Revenant_SS** · 08-31-2010, 08:15 PM

Too many negative reports about Royal Purple on the bobistheoilguy.com website for it to ever see use in my engine.

Amsoil is a very good oil, so is Mobil 1. Pennzoil Platinum is also very good. My advice is to take whatever advertisement, advice or test results from any manufacturers website and disregard them completely.

People on bitog.com send their results to blackstone labs which does a breakdown of the oil and sends them the results which they share with the rest of us. That's the only place people should be getting oil advice from.

And one thing I've noticed about LNF tests is that we have a higher concentration of fuel in our oil. I'd say because of the pressure of direct injection. For this reason, I change my oil at 5000kms instead of the oil life monitor. 2% fuel dilution was the recommended max and one LNF owner was seeing 4% when going by the OLM.

08-31-2010, 08:15 PM	#19 (permalink)
Revenant_SS Member Full Access Member Join Date: Sep 2009 Location: Eastern Canada Age: 37 Posts: 54	Too many negative reports about Royal Purple on the bobistheoilguy.com website for it to ever see use in my engine. Amsoil is a very good oil, so is Mobil 1. Pennzoil Platinum is also very good. My advice is to take whatever advertisement, advice or test results from any manufacturers website and disregard them completely. People on bitog.com send their results to blackstone labs which does a breakdown of the oil and sends them the results which they share with the rest of us. That's the only place people should be getting oil advice from. And one thing I've noticed about LNF tests is that we have a higher concentration of fuel in our oil. I'd say because of the pressure of direct injection. For this reason, I change my oil at 5000kms instead of the oil life monitor. 2% fuel dilution was the recommended max and one LNF owner was seeing 4% when going by the OLM. __________________ 2009 Cobalt SS/TC Trifecta tuned.