Quote:
Originally Posted by Tcoat
I sound like a broken record saying this but there has been zero correlation between crickets and ethanol content. Some don't get them and some do regardless of what fuel they are running.
Way back there was a group in Norcal (I think) where 5 of them got the same fuel from the same place at the same time. Three had crickets and two did not.
There have been reams and reams of conversations and data on this topic and the only thing we have learned is that there is not one single common point that applies to everybody. Individuals seem to think they have solved the mystery with their one off anecdotal assessments but overall it has never been solved. Ethanol content may be a factor but is not the factor in if you get them.
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I'm with you on this. I emptied the tank and engine of all gas at a shop, total drain, then ran total nonethanol gas (uber expensive) and it still chirped. I ran with that for a week, never stopped chirping.
My results were thusly:
BP Ultimate - extremely loud chirps, but in frequent, not constant
Shell Vpower Nitro - Constant low hum of chirping that doesn't stop, like crickets on red bull
Sunoco 93 - Constant loud chirp that doesn't stop
E85 variants from different locations - extremely loud chirps, infrequent, sounded just like BP Ultimate
Circle K 93 - Loud chirps, infrequent, random spouts of zero noise, then suddenly a streak of them
Valero 93 - Quiet chirps, moderate frequency
Marathon 93 - same as circle k
I've also tested 91 variants at each location after total emptying of the tank. This is not ethanol caused, but I think the ethanol content does indeed play a factor.
New engine + Nonethanol = no real difference in chirps
OLD engine 100,000K + nonethanol = good results
IMO, this is the texturing of the internal component that is thought to cause the sound that gets worn down over time. Once it is worn, it no longer makes noise and gas type wont matter.
Thats IMO and due to a year of experimenting with this. I've yet to try any additives into the gas itself on a consumer end. I'll be giving that a try.
At this point, I just go with the cheapest premium in the area, my ethanol content testing is over and I wont be investing more into it. Its a bust. I simply don't believe it has a lick to do with ethanol content, but rather the physical component itself being new and causing this sound, but over time it will wear and cease to make that sound.
I am sadly a very long time from that happening haha. My engine is basically brand new.