Does fuel dilution keep engines clean?

Use High Octane Fuel: For turbocharged engines, using higher octane fuel (91 or above) can help reduce the likelihood of Low Speed Pre-Ignition (LSPI) and knock, which can contribute to head gasket issues
I’ve never seen a credible source that actually documents that the octane rating of the fuel is correlated to LSPI occurrence.
 
I’ve never seen a credible source that actually documents that the octane rating of the fuel is correlated to LSPI occurrence.

You are correct, it doesn't correlate to the occurrence but it could impact the intensity of the event but not the occurrence.

This paper summarizes the findings.

The findings highlight that fuels with similar boiling properties and octane numbers can exhibit similar LSPI number counts, but with vastly different LSPI magnitudes and intensities. Moreover, the results highlight fundamental fuel properties such as flame speed are critical to characterizing the LSPI propensity and behavior of the fuel.

https://www.sciencedirect.com/scien... as a,but does reduce superknock probability.
 
You are correct, it doesn't correlate to the occurrence but it could impact the intensity of the event but not the occurrence.

This paper summarizes the findings.

The findings highlight that fuels with similar boiling properties and octane numbers can exhibit similar LSPI number counts, but with vastly different LSPI magnitudes and intensities. Moreover, the results highlight fundamental fuel properties such as flame speed are critical to characterizing the LSPI propensity and behavior of the fuel.

https://www.sciencedirect.com/scien... as a,but does reduce superknock probability.
Yeah I’ve seen that paper. It’s really about the blending adjuncts in the gasoline mixture as opposed to the octane rating itself.
 
You are correct, it doesn't correlate to the occurrence but it could impact the intensity of the event but not the occurrence.

This paper summarizes the findings.

The findings highlight that fuels with similar boiling properties and octane numbers can exhibit similar LSPI number counts, but with vastly different LSPI magnitudes and intensities. Moreover, the results highlight fundamental fuel properties such as flame speed are critical to characterizing the LSPI propensity and behavior of the fuel.

https://www.sciencedirect.com/science/article/pii/S0016236118308858#:~:text=Superknock was defined as a,but does reduce superknock probability.

Is there a quick explanation without having to read the whole document? :ROFLMAO: Just curious.

I am thinking if gasoline is igniting then it's igniting. I can't picture the intensity being significantly that different since the gasolines aren't significantly that different.
 
The Honda 1.5L turbo is banned in China bc of fuel dilution related issues.
It's not BANNED.

"

Honda 1.5L Turbo Engine Status in China​

Recall and Sales Suspension​

  • The Honda 1.5L turbo engine faced significant issues in China, particularly related to fuel dilution in the engine oil.
  • Due to these problems, Honda temporarily suspended sales of models equipped with this engine in China.

Current Situation​

  • The engine was involved in a recall to address the issues, which included reprogramming the engine control unit (ECU).
  • As of now, the engine is not banned outright, but its availability may be limited based on ongoing concerns and regulatory actions.

Implications for Consumers​

  • Potential buyers should be aware of the history of issues associated with the 1.5L turbo engine.
  • It's advisable to check for any updates or recalls if considering purchasing a vehicle with this engine in China."
 
It's not BANNED.

"

Honda 1.5L Turbo Engine Status in China​

Recall and Sales Suspension​

  • The Honda 1.5L turbo engine faced significant issues in China, particularly related to fuel dilution in the engine oil.
  • Due to these problems, Honda temporarily suspended sales of models equipped with this engine in China.

Current Situation​

  • The engine was involved in a recall to address the issues, which included reprogramming the engine control unit (ECU).
  • As of now, the engine is not banned outright, but its availability may be limited based on ongoing concerns and regulatory actions.

Implications for Consumers​

  • Potential buyers should be aware of the history of issues associated with the 1.5L turbo engine.
  • It's advisable to check for any updates or recalls if considering purchasing a vehicle with this engine in China."
As I recall, this hubbub was from 2018. That's basically forever in new motor vehicle terms...
 
IMO, any contamination in the oil will degrade its performance. This is one reason why we have to change engine oil at shorter intervals ......in comparison to for example: gear oil. Gear oil gets very little contamination from outside sources.

No good can come from adding gasoline to engine oil......unless your job is rebuilding engines
 
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