« Reply #6 on: September 22, 2011, 09:00:50 am »
The Dart has a GRP tank as well.
My experience is that the British market sealants used to be stripped off by German grade fuel and vice versa. Cannot tell what the difference was between their Lead free Benzine and our cheap Petrol but there was something. Is there still a problem there? Do not know. Whatever they were doing to their Benzine both the Bullnosed Saab and Schmitt preferred it to our stuff. Smoother and better performance and less vapour based issues. I would suggest even though called Benzine there was less benzine in it!
The worry about Ethanol is it once again has a lower vaporisation point then petrol. So 10% more volatile components in your air-cooled car. Tuning is going to become ever more important to be able to drive the cars as any vaporisation will lead to a weak mixture and a catch 22 on overheating plus associated wear.

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