Posts: 3480
Location: Elk River, Minnesota | Hiya,
I also run a higher compression engine, compliments of Hydrotec marine. I should preface this as well that when I know I am going to be burning a bunch of gas (like in Canada) I will fill up with 89 octane and burn through it all and never carry more than I need. If I can avoid using it, I do, just because the motor runs better on the 91...and that could very well be due to not just smoother burning, but to water collection of the oxygenated gas as well...I don't know... I just use what I find works best for my engine...91 works best for me... If it didn't exist, I'd use the 89, but I would make darn sure I use it all and not let it sit for any long period of time. I do agree with you, though, that having the choice would be great!! I know a bunch of classic car guys who would much rather run non-oxygenated gas in their "babies" so to speak...
I have tried running the E-85 gas in my wifes truck once in a while and with that stuff, it burns nice and it is cheaper, but....on a cost savings analysis, it actually cost MORE to run the E85 than regular gasoline. It just didn't give the mpg that gasoline does, so in all, I ended up filling up more (roughly 3 to 2) for the same distances traveled. It does make me wonder what kind of mpg my truck would get on regular 87 octane without Ethanol blend.
I use seafoam as well, but I usually use it as hard deep-cleaning shot to the motor....If I can get it in the carbs without making a mess I'll do that, but the pressurized items (mercury powertune) does the same thing without the mess... really brings back the power in the engine.
Steve
Edited by VMS 2/24/2010 6:51 PM
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