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Previous: Introduction
Previous: Introduction
Is 98 octane more economical even though it's more per litre?
It depends which car you're driving.
If your car runs only on 91RON then using higher octane will waste money. You can use Shell V-power or BP Ultimate to clean your engine but that's about it.
However if your car originally runs on 98RON, using lower octanes even 95 isn't recommended. Not only you'll lose power, but also increase fuel consumption. To matters worse, an engine management (EM) in modern cars is a computer. If the EM breaks down, then pistons (the engine) will follow. Eventually the "newer" car will have the same fate as older (not detuned) cars which depend on high octane fuels.
Basically just use recommended octane, no higher nor lower.
I drive an auto 2004 Hyundai Elantra 1800cc vehicle and find that in 'town' driving, my car petrol consumption computer tells me I can use between 12.2 to 14.3 l/100km depending on how hard I drive the car, with air con switched on. On the motorway, with a gentle foot, I can achieve 6 l/100.
My 2008 Honda Jazz 1.3 achieves 9.2 l/100km around town in auto with air con switched on. On a trip, eg to Tairua on the Coromandel, I acheve 5.9 l/100, driving at 90 to 100 km/hr.
I use premium petrol in the Elantra and 91 petrol in the Jazz.
Thought I should share my petrol consumption with readers.