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Hello. In my continuing quest to get better mileage(MPG)I have questions : #1 My gas station uses ethanol(10 %)mixed into its gas. I use regular(87 octane)gas. Is this 10 % Ethanol mixed in good or bad for mileage ? Or does it not affect mileage at all ? #2 I found a couple of very small exhaust leaks at clamps which I took care of by either tightening clamps better and/or puttying up leaks. There were only 2x spots and they were minor. Would minor exhaust leaks cause worse mileage(MPG)or not really matter ? Thanks in advance for your kind replys, info, feedback.
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' 86 manual sedan nearly 200,000 and ' 87 auto sedan about 120,000
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