Quote:
Originally Posted by Blue Dog
You aren't looking at the big picture.
The Stop/Start system is designed to reduce vehicle exhaust emissions, not to reduce vehicle running costs.
Which vehicle would be producing more exhaust emissions?
A - The stationary vehicle with the engine idling.
B - The stationary vehicle with the engine off.
Consider the number of vehicles world wide fitted with a Stop/Start system & the amount of exhaust emissions that are not entering the atmosphere.
The engine oil viscosity is also related to lowering exhaust emissions, not to make the engine easier to start or to reduce engine protection.
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Start Stop systems role is to reduce emissions and reduce fuel use which are obviously interlinked . Reducing the fuel use also reduces the running costs . On government fuel consumption test there is a quite a bit of time spent idling while stationary at which point engine turns off - this enables manufacturer to achieve better fuel economy on test , to be displayed as an official fuel use (window sticker).
https://www.greenvehicleguide.gov.au...nsumptionLabel
, here you can see what test cycles are .