Quote:
Originally Posted by pushrod
It might take 5+ years, but I bet you will eventually have issues. It doesn't take much to destroy cats.
I think I stand alone as someone that doesn't care about the cricket noise at all. My car started doing it within 12 hours of bringing it home from the dealer.
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meh...I've had the car since June 2012, and it's got somewhere around 70,000 kms on it so far. If I have to replace an O2 sensor in a couple more years, I can swallow that. If I poison the front cat in a couple of years... Awesome, I have a reason to finally nut up an put a header on it!
You're far from the only one who doesn't care about that godawful racket. I wish I could wrap my head around it, but I just can't do it. I'm a windows down kind of guy when the weather is warm/hot, and I rarely use my A/C. When I cruise through downtown or pull up beside another vehicle at an intersection, that sound echoing back at me just makes me angry.
Quote:
Originally Posted by FRSToyota86
Once one of our master mechanics once mentioned to me that gas with ethanol and methanol content have the same lubrication qulaities as the gas with out... In summary as a result using a gas with ethanol content for an extended period of time may dry up the internal seals for the high pressure direct injection system and cause failures...
It seems like its a clever idea Roddy... I talked to him again he still recommends the Shell 91 and mentioned 2-stroke oil is made to mix with fuel and that the skidoo manufacturers are also moving away from adding 2-stroke oil... Bottom line as @ pushrod say you might have issues with the O2 and cats... But I hope not... So let us know if there is any issues... By the way did you know what BMW is having the similar issues if not the same with their direct injection systems? They also recommend shell 91.
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I'm a little confused by the first part of your post...did you mean to say they don't have the same lubricating qualities?
I'm not an automotive engineer or a mechanic (let alone a master mechanic), and I'm glad I'm not. I like working on my cars...if I worked on cars for a living, that's the last thing I would want to do in my off time.
The following is just my own experience and opinion...
I have no problem with Shell's 91. Some people say it doesn't work for them. In Ontario at least, it is "E0". It kills the crickets in my car every time. When the ambient temperatures are below 10C or so, there are no crickets regardless of fuel used. Once above that, the car runs noticeably better on the 94 with ethanol...unfortunately, that is about the same temp the crickets start to come out. They increase in volume and pitch as the temperature goes up. I don't add anything to my fuel tank below 10C-ish. Above that...only if I am using gas with ethanol in it.
Modern 2-stroke oils burn pretty clean. My snowmobile uses about 1L of injector oil per tank of gas (40L), so a 40:1 ratio give or take depending on how hard I ride it. When adding 2oz (~60ml) to the tank of my car (50L), the ratio is more like 840:1. negligible. I'm not gonna sweat it. Am I saying it is the solution? No. It is a Band-Aid at best, but in my case it works. If I develop any issues, I'll post 'em up.
I have heard of other manufacturers having issues with direct injection pumps and noises, but I don't specifically remember BMW. LOL, If I pulled up beside a $70K BMW and heard crickets that weren't coming from my car, I'd have to point and give 'em a Nelson laugh.