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Priming has nothing to do with cleaning. It’s higher octane fuel. If your car Isn’t designed for higher octane fuel it will run like garbage. The whole point of
by tw04 6y ago
Priming has nothing to do with cleaning. It’s higher octane fuel. If your car Isn’t designed for higher octane fuel it will run like garbage. The whole point of high octane fuel is that it requires a higher temperature to ignite. If your car Isn’t designed for it it’s most likely only going to partially burn the fuel.
- kortilla 6y agoNo, the main point of high octane fuel is to be resistant to higher compression ratios so it doesn’t pre-detonate. Spark plugs have no issues igniting it. What op is referring to is additives that are added in by some gas dealers to the high octane fuel to upsell you. “Techron” is one I recall seeing at Chevron IIRC.
- herdrick 6y agoThe parent comment is right. It's not just the spark; heat and pressure are also part of what ignites your air/fuel mixture.
- kortilla 6y agoNot with gasoline. A gas engine can ignite at temps well below 0F and low compression. You might be thinking of diesel. Diesel depends on compression to combust and has heater coils to ensure minimum temps as well. This is more obvious when you read engine specs and they have minimum octane ratings, not specific ratings.
- pxx 6y agoYou can sometimes buy the additives separately. e.g. for Techron: https://amzn.to/33LH1RN https://amzn.to/33LH1RN
- arghwhat 6y agoHigh-octane fuels will not burn poorly. It just isn't necessary to increase octane further once the threshold of knocking/self-ignition at the target compression and cylinder temperature is reached. Plus you missed the point: In many places the premium fuel is the same octane number as regular (e.g. 95), but premium is with additives for <insert vague marketing>.
- deleted 6y ago[deleted]