sbw1
Well-Known Member
- Oct 10, 2006
- 8,188
- Boat Info
- This is listed in my signature
- Engines
- This is listed in my signature
The way I understood it, ethanol is the new octane improver. It replaces MTBE (the old octane improver). I took that to mean if you get "non ethanol" gas, it still is the old stuff - with MTBE. Is that not correct?
No. I don't believe it is. Refineries used to be protected from lawsuits by federal law when adding the MTBE to get the octane boost. Once the stuff started to show up in ground water monitoring wells, the law was changed and they stopped adding it. I'm not sure how they get the octance boost today (other than ETOH) but someone will probably chime in.