Joined: Aug 2017 Posts: 2,748 Threads: 31
Reputation:
95
Location: Auckland, NZ
Ethanol has only about half the calorific value of petrol so mpg will be worse. The 10% ethanol is like being sold a gallon 5% short. I am surprised about claims of different mpg with different octane ratings on basic petrol with pre computer cas. Spark adjustment would probably have corrected.
(Cars used to be set up not to ping at worst conditions. This determined the cr and hence efficiency. Cars now have crs which with conventional timing would ping wildly at full throttle. Instead the timing is computer retarded at wide throttle to avoid. The max power is much the same but the part throttle efficency is greatly improved by the very high cr.)
Joined: Aug 2017 Posts: 1,641 Threads: 93
Reputation:
15
Location: Monmouthshire
Meanwhile, whatever we have to feed to the carbs of our ferocious road devourers, what would be the appropriate paint or covering liquid to carefully slosh around inside a newly made or greatly re-skinned fuel tank?
Joined: Aug 2017 Posts: 985 Threads: 6
Reputation:
12
Location: Scottish Borders
I slosh sealed the tank in our fabric saloon at least 10 years ago. No problems yet.
Jim
Joined: Jan 2019 Posts: 1,567 Threads: 20
Reputation:
14
Location: Bala North Wales
Car type: 1933 RP Standard Saloon
I used Rustbusters 'Slosh' sealant in my tank after it had been professionally cleaned about two and a half years ago. No problems yet.
Joined: Aug 2017 Posts: 294 Threads: 11
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As we are discussing ethanol in petrol, would I be right in assuming that there would be no effect at all on a stainless steel petrol tank?
